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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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Growth Technology

GT Foliage Focus

Feed your greenery the perfect formula for vibrant, long-lasting foliage.

Size
Regular price From $7.49
Regular price $9.99 Sale price From $7.49
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Green Planet

Green Planet Massive

A true bloom maximiser that delivers exceptional flower size, weight, and quality.

Size
Regular price From $21.24
Regular price $24.99 Sale price From $21.24
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Plant Mechanics

Plant Mechanics Mega PK

Supercharge bloom phase with this universal, powerful PK booster.

Size
Regular price From $16.99
Regular price $19.99 Sale price From $16.99
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Optic Foliar

Optic Foliar Overgrow

Spray it, see it, be-leaf it.

Size
Regular price $27.99
Regular price $34.99 Sale price $27.99
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Green Planet

Green Planet Root Builder

A microbial ally that builds resilient root systems and healthier plants.

Size
Regular price From $42.49
Regular price $49.99 Sale price From $42.49
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Plant Mechanics

Plant Mechanics LED Fuel

Unlock potent, flavour-rich final flowers with optimised photosynthetic performance under LED light.

Size
Regular price From $16.99
Regular price $19.99 Sale price From $16.99
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FloraMax

Floramax OrganaBud

Elevate flower structure and aroma with a kelp-based additive that runs clean and performs consistently.

Size
Regular price From $22.50
Regular price Sale price From $22.50
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Green Planet

Green Planet Dual Fuel Starter Kit

The perfect kit for a full crop cycle, streamlined, affordable, and effective.

Size
Regular price $106.24
Regular price $124.99 Sale price $106.24
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Green Planet

Green Planet Liquid Weight

A carbohydrate and resin enhancer that powers bloom performance.

Size
Regular price From $38.24
Regular price $44.99 Sale price From $38.24
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Xtreme Gardening

MYKOS

Promotes healthier roots for stronger, more efficient growth.

Size
Regular price From $13.49
Regular price $14.99 Sale price From $13.49
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FloraMax

FloraMax Flowering Enhancer

One bottle does the job of three; yielding cleaner, simpler grow cycles with consistent bloom performance.

Size
Regular price From $24.99
Regular price Sale price From $24.99
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House and Garden

H&G Cocos A+B

Maximise plant health and yields with a nutrient system designed for coco growers.

Size
Regular price From $44.99
Regular price $49.99 Sale price From $44.99
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Green Planet

Green Planet Rezin

A finishing touch that maximises aroma, flavour, and resin quality.

Size
Regular price From $59.49
Regular price $69.99 Sale price From $59.49
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Plant Mechanics

Plant Mechanics Super Si

Accelerate crop structure and yield with pH-stable, highly absorbable silicon.

Size
Regular price From $16.99
Regular price $19.99 Sale price From $16.99
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FloraMax

FloraMax Root-XS

Give your plants an ultra-clean start with root support engineered for speed and reliability.

Size
Regular price From $34.99
Regular price Sale price From $34.99
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Green Planet

Green Planet Dual Fuel 1+2

The easiest way to deliver professional‑grade nutrition across the full plant life cycle.

Size
Regular price From $29.74
Regular price $34.99 Sale price From $29.74
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Green Planet

Green Planet Bud Booster

A reliable bloom enhancer for bigger, more productive flowers.

Size
Regular price From $8.49
Regular price $9.99 Sale price From $8.49
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Green Planet

Green Planet Pro Cal

The essential Cal-Mag support your plants need for strength, vitality, and consistent harvests.

Size
Regular price From $21.24
Regular price $24.99 Sale price From $21.24
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FloraMax

FloraMax Resin-XS

Achieve a cleaner, more potent bloom finish with targeted, residue-free performance.

Size
Regular price From $19.99
Regular price Sale price From $19.99
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Dr Greenthumbs

Dr Greenthumbs Root Roids

A living inoculant that delivers faster growth, healthier plants, and bigger yields.

Size
Regular price From $31.49
Regular price $34.99 Sale price From $31.49
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Green Planet

Green Planet Horti RawK

A targeted potassium boost for dense, high‑quality harvests.

Size
Regular price From $4.24
Regular price $4.99 Sale price From $4.24
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Growth Technology

GT Silica

Give your plants armour from within, silicon strengthens, protects, and boosts performance.

Size
Regular price From $7.49
Regular price $9.99 Sale price From $7.49
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House and Garden

H&G Multizyme

Boost plant vitality and nutrient efficiency with targeted enzymatic action.

Size
Regular price From $22.49
Regular price $24.99 Sale price From $22.49
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CANNA

CANNA Cannaboost Accelerator

Unlock your crop’s full flowering potential with enhanced metabolic activity.

Size
Regular price From $202.49
Regular price $224.99 Sale price From $202.49
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Plant Mechanics

Plant Mechanics Root Booster V2

Lay the foundation for vigorous growth with this multi-stage root and shoot stimulant.

Size
Regular price From $33.99
Regular price $39.99 Sale price From $33.99
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Optic Foliar

Optic Foliar Overgrow Concentrate Pack

Feed, protect, and supercharge your plants with one complete foliar care pack.

Size
Regular price From $27.99
Regular price $34.99 Sale price From $27.99
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Optic Foliar

Optic Foliar Rev

 

Size
Regular price From $39.99
Regular price $49.99 Sale price From $39.99
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Optic Foliar

Optic Foliar Watts

Turn light into growth power, energise your plants with Watts.

Size
Regular price From $39.99
Regular price $49.99 Sale price From $39.99
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Optic Foliar

Optic Foliar Transport

Efficient foliar delivery, anywhere, anytime.

Size
Regular price From $39.99
Regular price $49.99 Sale price From $39.99
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House and Garden

H&G Bud Xl

 

Size
Regular price From $35.99
Regular price $39.99 Sale price From $35.99
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Growth Technology

GT Chilli Focus

Fire up your chillies with comprehensive, tailored nutrition in every drop.

Size
Regular price From $7.49
Regular price $9.99 Sale price From $7.49
Unit price  per 
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Optic Foliar

Optic Foliar Atak

Rapid, on‑contact protection against mould, mildew, and fungal threats, safe for plants and beneficial insects at all growth stages.

Size
Regular price From $19.99
Regular price $24.99 Sale price From $19.99
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Dr Greenthumbs

Dr Greenthumbs Fruit Roids

An organic powerhouse that increases flower size, resin content, and crop resilience.

Size
Regular price From $53.99
Regular price $59.99 Sale price From $53.99
Unit price  per 
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Green Planet

Green Planet GP3 Professional Starter Kit

Complete, cohesive nutrition for dependable, high‑quality crops.

Size
Regular price $254.99
Regular price $299.99 Sale price $254.99
Unit price  per 
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Green Planet

Green Planet GP3 Bloom

A powerful bloom base designed to deliver denser, more aromatic harvests every cycle.

Size
Regular price From $21.24
Regular price $24.99 Sale price From $21.24
Unit price  per 
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Plant Revolution

Great White Premium Mycorrhizae

Empower your plants with a premium blend of beneficial mycorrhizae and microbes.

Size
Regular price From $67.49
Regular price $74.99 Sale price From $67.49
Unit price  per 
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Growth Technology

GT Ionic Grow

Simplify your vegetative feed program with a clean, buffered single-part nutrient.

Size
Regular price From $14.99
Regular price $19.99 Sale price From $14.99
Unit price  per 
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Growth Technology

GT Succulent Focus

Specialist nutrition for succulents, enhancing health, colour, and longevity.

Size
Regular price From $7.49
Regular price $9.99 Sale price From $7.49
Unit price  per 
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Growth Technology

GT Flower Focus

Ignite extraordinary flowering, bloom bold with GT Flower Focus.

Size
Regular price From $7.49
Regular price $9.99 Sale price From $7.49
Unit price  per 
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CANNA

CANNA Classic Flores A+B

Achieve vibrant, high-quality blooms with targeted nutrition for run-to-waste systems.

Size
Regular price From $58.49
Regular price $64.99 Sale price From $58.49
Unit price  per 
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Bio Diesel Nutrients

Bio Diesel Aloevate

Organic aloe & yucca formula for stronger, healthier, more resilient plants.

Size
Regular price From $14.99
Regular price $19.99 Sale price From $14.99
Unit price  per 
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Dr Greenthumbs

Dr Greenthumbs Root Roids Granular

A natural growth supercharger that primes roots for stronger, healthier performance.

Size
Regular price $31.49
Regular price $34.99 Sale price $31.49
Unit price  per 
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Growth Technology

GT Vegetable Focus

Tailored nutrition for vegetables, supporting healthy growth and superior flavour.

Size
Regular price From $7.49
Regular price $9.99 Sale price From $7.49
Unit price  per 
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Plant Mechanics

Plant Mechanics Super N+

Fuel thriving vegetative growth with a scientifically tuned nitrogen and Cal-Mag blend.

Size
Regular price From $16.99
Regular price $19.99 Sale price From $16.99
Unit price  per 
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Beneficial Bacteria for Agri-Aquaculture - BBA

HyMax Roots

A beneficial bacteria formula that supports a more stable root-zone environment across hydroponic media and soil.

Size
Regular price From $39.99
Regular price $49.99 Sale price From $39.99
Unit price  per 
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Green Planet

Green Planet GP3 Micro

The essential micronutrient base to keep crops strong, balanced, and high-performing.

Size
Regular price From $25.49
Regular price $29.99 Sale price From $25.49
Unit price  per 
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Green Planet

Green Planet Back Country Blend Bloom

A reliable bloom base for heavy, high‑quality outdoor harvests.

Size
Regular price From $4.24
Regular price $4.99 Sale price From $4.24
Unit price  per 
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Green Planet

Green Planet Back Country Blend Grow

 

Size
Regular price From $4.24
Regular price $4.99 Sale price From $4.24
Unit price  per 
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