Unlock Maximum Yields with GT Coco A & B

The GT Coco A & B is the high-performance 2-part coco coir nutrient system purpose-built for Australian growers. Manufactured in Perth, WA and optimised for local water profiles, this advanced dual-part formula delivers elevated Calcium, Magnesium, and Iron levels to counter coco’s naturally high cation exchange capacity (CEC) — preventing deficiencies before they start, without the need for separate Cal-Mag supplements. One complete system. Full lifecycle feeding. Exceptional results every grow.

Why GT Coco A & B is the Go-To Coco Nutrient in Australia

Purpose-Built for Coco Coir: Scientifically formulated to overcome coco’s natural nutrient lock-up, delivering a perfectly balanced mineral profile that keeps calcium, magnesium, and iron available to your plants at all times.
Built-In Cal-Mag & Iron: Elevated Ca, Mg, and Fe levels eliminate the need for additional Cal-Mag products — simplifying your feeding schedule and reducing overall cost.
True 2-Part A+B System: The split formula ensures maximum nutrient stability and absorption, far superior to single-part coco fertilisers for serious hydroponic results.
Full Lifecycle Feeding: One formula supports plants from vegetative growth through to flowering — no separate Grow/Bloom bottles required, making it ideal for beginners and experienced growers alike.
pH-Buffered for Coco Systems: Helps maintain stable pH levels between 5.8–6.2 in both hydroponic reservoirs and hand-watered coco setups — less adjustment, more consistency.
High-Purity Mineral Nutrients: Premium-grade mineral salts and chelated trace elements for fast uptake, explosive growth, and heavy flowering performance.
Australian Made for Local Conditions: Manufactured in Perth, WA and optimised for Australian water profiles, delivering consistent and reliable results nationwide.

Performance Benefits

Prevents calcium & magnesium deficiencies in coco coir
Faster root development and vigorous vegetative growth
Stronger stems, healthier foliage, and improved plant structure
Increased flower size, density, and final yield weight
Stable EC and pH for consistent, repeatable results
No extra additives required — complete nutrition in two bottles

How to Use

Dosage: 3ml–8ml per litre depending on growth stage
Mixing: Add Part A first, mix thoroughly, then add Part B
Target pH: Maintain between 5.8–6.2 for optimal coco nutrient uptake
Compatible with: Hand watering, drip systems, and automated hydroponic setups

Available Sizes

1L Twin Pack
5.5L Twin Pack
20L Commercial Set

GT Coco A & B is the complete, no-compromise coco coir nutrient solution for Australian growers who want professional results without the complexity of multi-additive feeding programs — from first feed to final harvest.

Frequently Asked Questions

How do I mix GT Coco A & B correctly?

Always add nutrients to water, never add water to concentrated nutrients. Fill your reservoir with the target volume of fresh water first, then add each part of GT Coco A & B separately, stirring between additions. If using a multi-part formula, add micro or Part A first, then grow or bloom, then any additives. Measure pH and EC after mixing and adjust to your target range — typically 5.8–6.2 pH and 1.4–2.2 EC for most crops.

What is the shelf life of GT Coco A & B?

Unopened, GT Coco A & B has a shelf life of 2 years when stored in a cool, dark location out of direct sunlight. Once opened, use within 12 months. Shake or stir well before each use as some formulations can settle. Do not freeze concentrated nutrients as this can cause precipitation of minerals that will not fully redissolve.

Can I use GT Coco A & B in soil as well as hydroponics?

GT Coco A & B is formulated for hydroponic systems but can be used for soil and coco growing at adjusted rates. Soil typically requires lower EC than hydro or coco as nutrients are buffered by the growing medium. Start at 50–70% of the recommended hydroponic dose when applying to soil and increase based on plant response.

How do I dispose of leftover nutrient solution made with GT Coco A & B?

Dilute spent nutrient solution with water and use it to water outdoor garden beds or lawns — it is an excellent fertiliser for outdoor plants. Avoid disposing of large volumes directly into storm drains. In residential situations, diluted nutrient runoff down a household drain is acceptable in small quantities.

Does GT Coco A & B ship fast within Australia?

Yes — GT Coco A & B ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.