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Reiziger Coco A+B
Reiziger Coco A+B is a two-part nutrient system formulated specifically for coco coir. One base feed carries plants from rooted cuttings and seedlings through vegetative growth, flowering and final ripening. It is built from the original recipes used at the Seed Bank of Holland in the 1980s, and Reiziger position it as a legendary Dutch formula for fast growth and high yields in fruiting and flowering plants. What sets it apart is its balance: nitrate-rich nitrogen paired with high-grade calcium, magnesium and a complete set of chelated micronutrients, made for fast-growing annual crops in coco-based systems under grow lights.
The work is split across two bottles. Part A is built on calcium nitrate and potassium nitrate. Part B carries monopotassium phosphate, magnesium nitrate and sodium molybdate. As with most two-part bases, the split keeps concentrated calcium in one bottle and phosphate in the other, so they only meet once diluted in the tank. Nearly all of the nitrogen is in nitrate form, which plants take up readily, supporting healthy, energetic, compact growth. The phosphorus uses Reiziger's patented PPX technology, designed to enable fast nutrient uptake during critical growth phases. The micronutrients are chelated, so they stay available for absorption as pH moves, and the formula helps steady pH in the root zone, reducing the stress and deficiencies that follow a drifting feed.
Reiziger credit the formula with faster flowering initiation in short-cycle plants, more yield from the same flowering time, enhanced sweetness, flavour and aroma, more robust root systems and larger blooms, with less frequent nutrient changes and less pH monitoring. They also state it is safe for all strains and guaranteed not to burn when used as directed. Coco A+B comes in 1 L, 5 L and 20 L sizes, each size supplying that volume of both Part A and Part B. Shake both bottles before measuring and always add the two parts in equal amounts. Because the dose and EC target climb through early bloom and then ease back for weight gain and final ripening, checking EC at every stage change is the habit that gets the most from this feed. Reiziger's Root Booster, Grow Booster and Bloom Minerals can be added to the same tank if you use them. Let the finished mix stand for several hours before the final pH adjustment.
Dutch two-part nutrition made for coco, from cutting to final ripening!
Energetic Compact Growth
Nitrate-rich nitrogen feeds plants quickly through the roots
Crop Strength and Colour
Extra calcium, iron and magnesium for sturdier plants
Feeds Through pH Swings
Chelated micronutrients stay available as pH shifts
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Reiziger Coco A+B
Key Highlights
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Key Highlights
- Two-part A+B base formulated specifically for coco coir
- One base feed covers both vegetative growth and flowering
- Nitrate-rich nitrogen for vigour and vibrancy
- High-grade calcium and magnesium plus a complete chelated micronutrient set
- Patented PPX phosphorus helps dissolve mineral precipitation in irrigation systems
- No harmful sulphates, chlorides, carbonates or excess soluble salts
- Based on original Dutch recipes from the 1980s
Directions for Use
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Directions for Use
Dilution Rate
- Root Drench: 1.5 - 4 ml A + 1.5 - 4 ml B per L
Application
- Shake Coco A and Coco B well before use.
- Fill the nutrient tank with water.
- Add equal amounts of Part A and Part B at the rate for the plants' stage of growth from the Reiziger Coco Feed Chart in Resources, adjusting for the plants' growth and health.
- Add any optional Reiziger boosters, such as Root Booster, Grow Booster or Bloom Minerals, if used.
- Adjust the EC to the target for the stage of growth, up to 2.0 mS/cm above the tap water reading.
- Let the mixture stand for several hours before adjusting pH.
- Adjust pH to the target for the stage of growth, within 5.5 - 6.2.
- Irrigate until drainage appears.
Safety
Store in a cool, dark, frost-free place.
Guaranteed Analysis
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Guaranteed Analysis
Reiziger Coco Part A
- Total Nitrogen 4% (all nitrate form)
- Soluble Potash (K₂O) 1%
- Calcium 4.5%
Reiziger Coco Part B
- Total Nitrogen 1% (nitrate)
- Available Phosphate 4%
- Soluble Potash 2%
- Magnesium (water soluble) 1.1%
- Molybdenum 0.001%
Resources
Shipping & Returns
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Shipping & Returns
Check delivery options for the currently selected item and quantity.
Estimate is for this item and quantity only. Final whole-order freight is confirmed at checkout.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@hydrooasis.com.au
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@hydrooasis.com.au.
Size: 1 L
