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Nutrients & Additives

Give your plants the fuel they need to thrive.

Browse our complete range of plant nutrients and additives, formulated for both soil-based and hydroponic systems. From base nutrients and bloom boosters to root stimulants, foliar sprays, and microbial inoculants, we’ve got every stage of plant growth covered.

💧 Suitable for all growing media
🌿 Backed by real-world experience & expert advice
🧪 Trusted brands, proven results, great value

Grow smarter with high-performance nutrients and additives from Hydro Oasis, no matter how you grow.

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House and Garden

H&G Soil A+B

H&G Soil A+B is a premium two-part base nutrient developed specifically for plants grown in soil and rich soil blends. Soil’s natural buffering capacity and microbial activity require a precise nutrient profile to maximise plant health and performance. This expertly balanced formula delivers all essential macro and microelements, including chelated trace elements and readily available calcium and magnesium, ensuring complete nutrition throughout the crop cycle. Enriched with humic and fulvic acids, Soil A+B promotes enhanced nutrient uptake, improved root vitality, and stronger plant structure. Its clean, fully soluble formulation is designed to run smoothly in both hand-watered and automated systems, providing a stable pH and consistent feed with no residue build-up. From the early vegetative stage through to heavy flowering, this nutrient supports lush growth, vibrant foliage, and abundant, high-quality blooms. Trusted by growers for its reliability and ease of use, Soil A+B integrates seamlessly into any soil-based feeding program, delivering dependable results crop after crop.

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House and Garden

H&G Cocos A+B

H&G Cocos A+B is a premium two‑part base nutrient formulated specifically for plants grown in coco coir (40% coco or higher). It supplies a complete balance of primary, secondary and trace elements while accounting for coco’s active cation‑exchange behaviour. By prioritising calcium, magnesium and micronutrient availability, it safeguards against the deficiency patterns common in coco substrates and keeps nutrition consistently available to roots. Built on 100% liquid base elements with no bulking agents, and featuring Eddha‑Fe (iron) plus humic and fulvic acids, Cocos A+B mixes cleanly, stays highly soluble and supports rapid uptake. Use from early vegetative growth through full bloom in run‑to‑waste or hand‑watered coco systems for steady growth, strong structure and confident generative performance across the crop cycle. Whether you’re running a first coco tent or multiple rooms, the simple A‑then‑B mixing order and clear ml/L dosing make day‑to‑day fertigation straightforward. Pair with your preferred coco substrates and stimulants for a scalable, coco‑ready base that performs from seedling to harvest.

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Bio Diesel Nutrients

Bio Diesel Bio-One

Bio Diesel Bio-One is a premium 100% organic microbial inoculant meticulously formulated to transform your root zone into a thriving hub of beneficial biology. Harnessing the power of plant and ocean ferments, Bio-One introduces a diverse range of living, salt-tolerant bacteria and fungi that work in harmony to supercharge nutrient cycling, stimulate plant immunity, and protect against harmful pathogens. Packed with enzymes and bioactive compounds, Bio-One actively breaks down organic matter, biofilms, and dead root material, keeping the rhizosphere clean and primed for maximum efficiency. This biological activity not only prevents the build-up of waste but also converts complex compounds into forms more readily absorbed by plants, enhancing nutrient availability at every stage of growth. The result is a stronger, more expansive root system that supports improved water and nutrient uptake, greater tolerance to environmental stress, and consistently vigorous plant development. Compatible with soil, coco, and hydroponic systems, Bio-One seamlessly integrates into any feeding program, making it a versatile solution for growers seeking healthier roots, enhanced growth rates, and superior crop quality from start to finish.

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Bio Diesel Nutrients

Bio Diesel Starter Kit

Bio Diesel Starter Kit delivers the complete Bio Diesel nutrient system in one powerful package. Designed for growers who want everything they need, from base nutrition to bloom-boosting additives, in a convenient, high-performance bundle, this kit takes you from seed to harvest with ease. This all-in-one collection features full-sized Green Diamond A&B base nutrients, potent stimulants like Aloevate and Super Natural, bloom enhancers, flush solutions, plus essential calcium and potassium support. Each component is formulated to support plant health, boost metabolism, and enhance flavour and yield, all while prioritising organic, biology-driven performance. Whether you’re starting your first grow or optimising a hydro, coco, or soil setup, this kit ensures simplicity, synergy, and top-tier results, plus a grower's guide and limited-edition merch to elevate your experience.

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House and Garden

H&G pH+ Stabil/Osmose

H&G pH+ Stabil/Osmose is a professional-grade pH adjuster and stabiliser formulated specifically for growers using reverse osmosis (RO) water or very soft water sources. These water types often lack carbonate hardness, making them prone to rapid pH fluctuations once nutrients are added. This product not only raises pH but also replenishes essential carbonates to create a reliable buffer, ensuring a stable pH range for up to 10 days. This stability is vital for consistent nutrient uptake, preventing deficiencies, and supporting optimal plant growth. The formula helps protect plants from nutrient lockout caused by unstable pH and improves overall solution performance in hydroponic, coco, and soil systems. It is particularly beneficial for growers running recirculating systems or long-term reservoirs, where maintaining a steady pH is critical. By restoring balance to RO or soft water, pH+ Stabil/Osmose creates a dependable foundation for any nutrient program and reduces the frequency of manual pH adjustments.  

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House and Garden

H&G Roots Excelurator

H&G Roots Excelurator is a leading root stimulator and protector, formulated to deliver explosive root growth while safeguarding plants from root diseases. Often referred to as “liquid gold” for roots, this powerful additive contains a unique blend of plant extracts, beneficial nutrients, and protective agents that create a clean, pathogen-free root environment. It stimulates the rapid development of new root hairs, maximises nutrient uptake, and encourages robust, white, and healthy root systems. By promoting a strong root network early on, Roots Excelurator sets the foundation for faster vegetative growth, improved resilience to environmental stress, and higher yields. Its protective properties help shield roots from common issues such as pythium and fusarium, making it especially valuable in hydroponic and recirculating systems where disease can spread quickly. Suitable for hydroponics, coco, and soil, Roots Excelurator integrates easily into any nutrient program and delivers consistent, clean performance throughout the crop cycle.

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House and Garden

H&G Multizyme

H&G Multizyme is a premium enzymatic bio-stimulant that works to optimise nutrient uptake, enhance root health, and maintain a clean, biologically active root zone. Its advanced formulation contains a potent combination of enzymes, co-enzymes, vitamins, and plant extracts, carefully selected to accelerate the breakdown of dead root material and organic waste. This process converts waste into immediately plant-available nutrients, improving overall nutrient efficiency while stimulating beneficial microbial activity. Magnesium, vitamins, and complex sugars within Multizyme also help boost metabolic functions, supporting stronger cell structure, more efficient photosynthesis, and improved stress resistance. By keeping the root zone free from harmful build-up and promoting a balanced microbial environment, Multizyme helps plants achieve faster vegetative growth, healthier foliage, and more productive flowering. Suitable for use in hydroponics, coco, and soil systems, Multizyme is compatible with all nutrient programs and delivers consistent results without leaving residues that could clog irrigation systems. It can be used throughout the crop cycle, from early vegetative growth to the final weeks before harvest.

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CANNA

CANNA Terra Vega

CANNA Terra Vega is a single-part nutrient solution designed specifically for the vegetative stage of plants grown in soil or potting mixes. It provides an easily absorbable blend of essential macro- and micronutrients to support vigorous shoot development, strong roots, and lush foliage growth. Enriched with chelated trace elements, nitrogen compounds, and beneficial humic and fulvic acids, Terra Vega promotes optimal nutrient uptake even in soils with variable composition. Its formulation encourages rapid vegetative growth, ensuring plants are well-prepared for a strong flowering phase.

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CANNA

CANNA Rhizotonic

CANNA Rhizotonic is a powerful, algae-based root stimulant designed to promote rapid root development in seedlings, cuttings, and stressed plants. It contains a carefully balanced blend of vitamins, trace elements, and natural bioactive compounds that encourage new root growth and improve plant resilience. This versatile additive can be used during early growth, after transplanting, or when plants experience stress. By supporting strong root establishment, CANNA Rhizotonic enhances nutrient uptake, boosts overall plant health, and provides a vital foundation for vigorous vegetative and flowering phases.  

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CANNA

CANNA PK 13-14

CANNA PK 13-14 is a high-quality bloom booster designed to provide a powerful boost of phosphorus (P) and potassium (K) during the flowering phase. This concentrated additive supports the natural flowering process, helping plants develop denser, heavier blooms and improve overall yield quality. Formulated for use in soil, coco, and hydroponic systems, PK 13-14 delivers an easily absorbable ratio of phosphorus and potassium at the stage when plants need it most. By enhancing energy transfer and bud formation, it complements your base nutrient to maximise flowering potential.

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CANNA

CANNA Cannazym

CANNA Cannazym is a premium enzyme additive designed to break down dead root material and convert it into valuable nutrients. This process not only improves nutrient availability but also prevents root rot and keeps your root zone clean and healthy. By stimulating microbial life and increasing oxygen availability, Cannazym creates an optimal environment for robust root development and overall plant vitality. Ideal for use in soil, coco, and hydroponic systems, Cannazym enhances the efficiency of your feeding program while helping to maintain a well-aerated and biologically active root zone.

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CANNA

CANNA Cannaboost Accelerator

CANNA Boost Accelerator is a premium flowering stimulant formulated to enhance plant metabolism and maximise flower development. Designed for use in soil, coco, and hydroponic systems, it promotes faster photosynthesis, improves energy transfer, and supports bigger, more aromatic blooms. By stimulating the plant’s natural processes, Boost Accelerator helps achieve fuller flowers and better quality yields. It works alongside your base nutrients and bloom boosters to push flowering performance to its peak, making it a trusted additive for growers seeking exceptional results.

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Bio Diesel Nutrients

Bio Diesel Bloom Enhancer

Bio Diesel Bloom Enhancer is a fully organic flowering stimulant meticulously crafted to maximise flower mass, resin production, and terpene expression in premium crops. Its advanced formulation combines micronised fossil guano, plant proteins, complex sugars, and fulvic and amino acids to naturally chelate minerals, improve nutrient mobility, and accelerate plant metabolic processes during the demanding bloom phase. By promoting efficient nutrient assimilation, Bloom Enhancer helps plants channel energy directly into bud growth, resulting in denser, heavier, and more aromatic flowers. This bioactive blend works in synergy with beneficial microbes to create a thriving root zone, reducing the risk of nutrient lockouts and minimising the need for extensive flushing. The inclusion of complex sugars fuels both the plant and its microbial partners, while amino acids and bio-stimulants support enzyme activity and stress resilience. These actions combine to boost photosynthesis efficiency, improve carbohydrate transport, and enhance the plant’s natural ability to produce oils and terpenes. Designed for use from early to mid-bloom, Bloom Enhancer provides the essential building blocks for exceptional floral development and superior sensory quality. Its clean, fully soluble formulation makes it compatible with soil, coco, and hydroponic systems, and it integrates seamlessly with both organic and conventional feeding programs.

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Dr Greenthumbs

Dr Greenthumbs Root Roids Boost

Root Roids Boost is Dr Greenthumbs’ high-potency Bacillus inoculant, engineered to elevate root-zone health, nutrient efficiency, and overall plant performance. This advanced biological formula delivers a powerful blend of Bacillus species, amino acids, and calcium to invigorate the rhizosphere. By stimulating microbial activity and strengthening cellular function, Root Roids Boost accelerates root development, drives chlorophyll production, and improves plant resilience under stress. Safe, organic-friendly, and highly versatile, it integrates seamlessly into any soil, coco, or hydro system to promote vigorous vegetative and early flowering growth. By enhancing nutrient cycling and building a stronger plant foundation, Root Roids Boost helps crops achieve fuller canopies, greener foliage, and healthier root structures. It works independently or alongside other microbial and organic products, making it a flexible tool for growers seeking consistent results. Use it through veg and into pre-flower for a powerful push in plant vitality.

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Dr Greenthumbs

Dr Greenthumbs Root Roids Granular

Root Roids Granular is Dr Greenthumbs’ premium mycorrhizal inoculant designed to supercharge root development and plant vigour, naturally. The dust‑free granules deliver a concentrated blend of arbuscular mycorrhizal fungi on a clean organic carrier, establishing a symbiotic network that dramatically increases effective root surface area. This boosts nutrient and water uptake, improves stress tolerance, and helps plants establish faster after transplant. Safe for propagation with no burn risk, the granules are simple to mix into fresh media, sprinkle into planting holes, or broadcast around existing root zones. By enhancing the rhizosphere, Root Roids Granular supports stronger stems, fuller canopies, and healthier, more productive plants. It integrates seamlessly with organic programs and works in soil, coco, and even biologically managed hydro setups. Use on its own or alternate with Fruit Roids to push both root performance and flower quality.

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Dr Greenthumbs

Dr Greenthumbs Go & Grow

Go & Grow is Dr Greenthumbs’ advanced organic vegetative blend, crafted to spark vigorous foliage, healthy roots, and thriving soil life. Formulated with a synergistic mix of alfalfa meal, neem meal, kelp meal, malted barley, coconut meal, soy meal, gypsum, lime, rock dust mix, potash, and seabird guano, this nutrient-dense recipe delivers both macronutrients and trace minerals alongside natural growth stimulants. Ideal for vegetables, lawns, ornamentals, succulents, and indoor greens, Go & Grow lays the foundation for lush early growth in any organic garden. By activating microbial activity in the soil, Go & Grow supports nutrient cycling and uptake, strengthening root zones and fuelling rapid vegetative development. Its balanced structure ensures plants receive consistent nutrition and energy, producing dense foliage and resilient growth. Easy to use and highly versatile, Go & Grow can be added to fresh soil mixes, top-dressed onto existing beds, or brewed into a nutrient-rich botanical tea, offering flexible feeding options for growers of all levels. Used on its own, Go & Grow drives strong vegetative performance. When paired with Bud & Bloom, it creates a complete, balanced nutrient program, delivering sustained fertility and healthy soil biology from start to finish.

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Dr Greenthumbs

Dr Greenthumbs Bud & Bloom

Bud & Bloom is Dr Greenthumbs’ premium organic bloom booster, formulated to deliver explosive flowers, nutrient-rich fruits, and improved soil health. Made from a rich blend of alfalfa meal, neem meal, coconut meal, kelp meal, seabird guano, gypsum, rock dust, malted barley, and potash, this all-natural formula provides the perfect balance of macronutrients and trace elements to supercharge the flowering and fruiting stage. Suitable for vegetables, fruit trees, ornamentals, succulents, and indoor crops, Bud & Bloom promotes vibrant colour, robust floral structures, and enhanced flavour profiles. By replenishing soil fertility and stimulating beneficial microbial activity, Bud & Bloom creates the ideal environment for nutrient cycling and uptake. Plants thrive with stronger root systems, better resistance, and more aromatic harvests. Its versatility allows growers to top-dress directly, mix into potting soil, or brew into a nutrient-rich botanical tea, making it an adaptable and powerful addition to any organic program. As part of Dr Greenthumbs’ handcrafted soil amendments, Bud & Bloom integrates seamlessly with Go & Grow to form a complete nutrient package from start to finish. This synergy ensures consistent growth, healthy soil biology, and higher-yielding, better-tasting produce.

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Growth Technology

GT Orchid Focus Bloom

GT Orchid Bloom Focus is a premium liquid nutrient formulated to maximise the size, colour, and longevity of orchid flowers. Based on Growth Technology’s Single Part Technology (SPT), it provides all 12 essential minerals in a pH-buffered, highly bioavailable form to support optimal nutrient uptake during the blooming stage. Enriched with pure mineral salts and chelated trace elements, GT Orchid Bloom Focus encourages prolific, vibrant blooms while maintaining strong foliage and healthy roots. The clean formulation is free from chlorides, urea, sodium, and ammonium, ensuring gentle yet effective feeding that avoids nutrient imbalances or salt stress. Perfect for all flowering orchid types, including Phalaenopsis, Cattleya, Cymbidium, and Dendrobium, it is suitable for use in bark, sphagnum moss, perlite, and other media, as well as hydroponic orchid systems.

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Growth Technology

GT Orchid Focus Grow

GT Orchid Grow Focus is a premium liquid nutrient formulated specifically for the vegetative growth stage of orchids. Using Growth Technology’s Single Part Technology (SPT), it delivers all 12 essential minerals, in a pH-buffered, highly bioavailable form, ensuring optimal nutrient uptake for strong leaves and robust root systems. Blended from pure mineral salts and chelated trace elements, GT Orchid Grow Focus encourages vigorous growth and lush foliage while building the plant’s reserves for spectacular flowering later on. Its gentle, clean formulation is free from chlorides, urea, sodium, and ammonium, reducing the risk of nutrient burn or salt build-up. Suitable for all orchid varieties, such as Phalaenopsis, Cattleya, Cymbidium, and Dendrobium, it works equally well in bark, sphagnum moss, perlite, and other growing media, as well as hydroponic orchid systems.

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House and Garden

H&G MgO 8%

H&G MgO 8 % Magnesium is a highly concentrated magnesium supplement designed to prevent and correct magnesium deficiencies at any stage of plant growth. Magnesium is an essential secondary nutrient, central to chlorophyll synthesis and a key activator for over 300 plant enzymes involved in growth, metabolism, and nutrient transport. Without adequate magnesium, plants quickly exhibit interveinal chlorosis; yellowing between the veins, leading to reduced photosynthesis, slower growth, and diminished yields. This premium formulation delivers magnesium in a highly available form, ensuring rapid uptake and utilisation by plants even under challenging conditions such as fast growth cycles, high-intensity lighting, or suboptimal water quality. By maintaining adequate magnesium levels, MgO 8 % supports deep green foliage, maximises photosynthetic efficiency, and strengthens plant tissue, resulting in healthier, more productive crops. MgO 8 % Magnesium is fully compatible with all nutrient programs and growing systems, including hydroponics, coco, and soil. It can be used as a preventative measure to maintain optimum nutrient balance or as a corrective feed when deficiency symptoms appear.

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House and Garden

H&G Drip Clean

H&G Drip Clean is a specialised maintenance additive designed to keep irrigation systems, drippers, and lines free from salt and nutrient build-up. By preventing the accumulation of mineral deposits, Drip Clean ensures consistent water and nutrient delivery, reducing the risk of blockages, uneven feeding, and equipment wear. This makes it particularly valuable in hydroponic and coco systems, where precision irrigation is critical for optimal plant performance. Formulated with a unique potassium-based compound, Drip Clean binds and removes excess minerals from the root zone and system components without disrupting plant nutrition. Its gentle yet effective cleaning action helps maintain a healthy root environment, improves nutrient uptake, and supports vigorous plant growth over multiple crop cycles. Compatible with all nutrient programs, Drip Clean is easy to integrate into routine feeding and works continuously to protect both plants and equipment. It is suitable for use in hydroponics, coco, and soil systems, and is effective for both hobbyists and commercial growers.

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House and Garden

H&G Amino Treatment

H&G Amino Treatment is a high-performance bio-stimulant that delivers exceptional results from the early vegetative stage right through to the final weeks of flowering. Developed using House & Garden’s proprietary seed-extract technology, this formula combines plant-derived amino acids, enzymes, ultra-fine colloidal silicate, and premium sea kelp extracts. This potent blend accelerates cell division, strengthens plant structure, and improves nutrient distribution, resulting in more vigorous growth, denser flower formation, and superior crop quality. The addition of highly bioavailable mono-silicic acid fortifies cell walls, increasing resistance to environmental stress, pests, and disease, while also improving nutrient uptake efficiency. Sea kelp and seed extracts provide natural plant hormones and enzymes that stimulate chlorophyll production, elevate photosynthetic rates, and promote sugar transport to developing flowers and fruits. These actions help drive heavier yields, improved resin production, and enhanced aroma and flavour profiles. Amino Treatment is clean-running, highly soluble, and fully compatible with hydroponic, coco, and soil-based systems. It can be used as part of a complete nutrient program in both small-scale hobby grows and large-scale commercial operations. When applied consistently, it supports healthier, stronger plants capable of reaching their full genetic potential.

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W2G

Probiotics

W2G Probiotics is a highly concentrated microbial inoculant designed to enrich the root zone with beneficial fungi and bacteria. Formulated with 16 species of endo- and ecto-mycorrhizal fungi, 8 species of Trichoderma, and 57 species of beneficial bacteria, it provides over 1.4 billion colony-forming units (CFU) per gram. This powerful diversity enhances nutrient cycling, root colonisation, and overall plant health. Suitable for seedlings, cuttings, and mature plants, W2G Probiotics actively suppresses harmful anaerobic microbes by out-competing them, while promoting stronger, whiter roots. By fostering a balanced soil ecosystem, it improves nutrient uptake efficiency and increases plant resilience to stress and disease. It can be applied as a root drench, foliar spray, or brewed into a living microbial solution for maximum activity.

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House and Garden

H&G Magic Green

H&G Magic Green is a premium foliar spray designed to rapidly revitalise and strengthen plants during the vegetative stage and early flowering. Its advanced formula combines a balanced blend of essential nutrients, trace elements, natural wetting agents, and plant-available minerals to boost chlorophyll production, enhance photosynthetic efficiency, and promote vigorous new growth. This targeted nutrient delivery system helps plants maintain a deep, healthy green colour, improving their overall resilience and growth rate. Magic Green is especially effective for crops recovering from environmental stress, pest damage, nutrient imbalances, or transplant shock. By bypassing the root zone and supplying nutrients directly to the leaf surface, it ensures rapid absorption and immediate results, even in plants with compromised root health. Its gentle, non‑burning composition makes it safe for use on seedlings, cuttings, and mother plants, supporting consistent growth in both small‑scale and large‑scale operations. Whether you are nurturing young plants, revitalising tired foliage, or preparing crops for a productive bloom cycle, Magic Green delivers the concentrated, fast‑acting nutrition plants need to thrive.

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Impello Biosciences

Tribus

Impello Biosciences Tribus Original® is a highly concentrated microbial inoculant featuring a synergistic consortium of three elite rhizobacteria, Bacillus subtilis, Bacillus amyloliquefaciens and Bacillus pumilus, at 10 billion CFU per mL. These endospore-forming Bacillus strains quickly colonise the rhizosphere, producing extracellular enzymes and siderophores that mobilise, solubilise, and chelate nutrients for enhanced uptake. The result is faster root initiation and expansion, more efficient water use, accelerated vegetative growth, and improved yield quality from seedling to harvest. Independent trials have shown measurable gains, including +15% increase in dry weight yield, +14% increase in growth rate, and +16% increase in stem diameter. Engineered for reliability, Tribus Original integrates cleanly into any nutrient program and delivery method (soil, coco, hydroponics, DWC, drip), without foaming, gunk, or biofilm. The pH- and salt-tolerant formulation remains stable in solution (use within 24 hours for best results) and is backed by a minimum 18‑month shelf life when stored correctly.

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