★★★★★
Hydro system improved
My hydro setup has been much more stable since using this. Growth is consistent and plants look much healthier.
Free Shipping
Limited Time
Reviews
5.0
★★★★★
Based on 3 reviews
Page 1 of 3
Hydroponic Nutrients Fertilizer – Two-Part Formula (A & B)
Price range: $31.50 through $370.00
High-performance two-part hydroponic nutrients engineered for faster uptake, cleaner reservoirs, and stronger results.
Performance-focused formula for clean, dependable hydro feeding
NPK 25-6-40 to support vigorous growth and stronger crop performance
High-availability minerals with calcium, magnesium, potassium nitrate & trace elements
Two-part A & B system for stable mixing and reliable uptake
Suitable for major hydro systems including DWC, NFT, drip, coco, and recirculating setups
Australian Owned & Manufactured
Free Shipping
Ending Soon
Boost Plant Growth
CompleteGrow A & B Nutrient Solution – Commercial Strength, Home-Gardener Ready
Developed by hydroponic farmers with over 20 years of experience, this premium two-part liquid fertiliser delivers professional-grade nutrition—now made simple for everyday growers.
Suitable for hydroponic systems, indoor plants, outdoor gardens, vegetables, fruit trees, and more. Formulated with high-purity minerals for rapid absorption and visible growth results.
What Makes This Fertiliser Special?
- Trusted by commercial growers for consistent performance
- Contains all essential macro and micronutrients plants need
- 100% water-soluble for clean, efficient hydroponic feeding
How to Use
Always dilute Part A and Part B separately in water (never mix concentrates together).
- Hydroponics & Seedlings: 3ml Part A + 3ml Part B per 1L water
- Potted Plants & Gardens: 4ml Part A + 4ml Part B per 1L water
Typical Nutrient Analysis
(% W/W – formulation basis):| Nutrient | Percentage (% W/W) |
|---|---|
| Nitrogen (N) | 25.6% |
| Phosphate (P) | 5.7% |
| Potassium (K) | 41.5% |
| Calcium (Ca) | 3% |
| Magnesium (Mg) | 1% |
| Sulphur (S) | 1.8% |
Trace Elements
| Element | Percentage (%) |
|---|---|
| Iron (EDTA) | 0.030% |
| Manganese (EDTA) | 0.012% |
| Zinc (EDTA) | 0.020% |
| Boron | 0.015% |
| Copper Sulphate | 0.004% |
| Sodium Molybdate | 0.002% |
Safety Directions
⚠️ Not to be taken. Keep out of reach of children. May irritate skin or eyes. Wash hands after use and rinse all edible plants before consuming. Made in Australia • Used by Professionals • Bottled for Home GardenersReviews
5.0
★★★★★
Based on 3 reviews
★★★★★
Hydro system improved
My hydro setup has been much more stable since using this. Growth is consistent and plants look much healthier.
★★★★★
Grows great tomatoes!
Very happy with outcome when using on tomato seeds. Plants grew quick and strong. Plenty in the bottles so will last a long time. A great replacement for a brand I once used but is no longer in stock. Took a gamble on this and glad I did.
★★★★★
Wow, noticeably better growth and excellent value (read about my comparison)
I’ve been growing a range of plants in my hydroponic setup, mostly lettuce, kale, and spinach, and after switching to these nutrients, I’ve seen a huge improvement in growth and overall plant health. Everything in my setup stayed the same: lights, trays, timer, etc, so this was a fair comparison, and the difference was clear. My plants are growing faster, look more vibrant, and seem much healthier than when I was using the smaller bottle of nutrients that came with my kit. The cos lettuce (same seeds) also 'stronger' if thats possible!
These bottles are also great value for the volume you get. It’s easy to see why they come up as an Amazon recommendation. I didn’t realise how much of a difference nutrient quality could make until now.
I’ve attached a photo of my current setup (at about 4 weeks) so you can see the results for yourself. This is only half grown, I have run out of room. I think they are growing about 30% faster. Highly recommend this if you’re serious about getting better growth from your hydro system.
Best For These Plants
Made for Hydroponic Systems & Grow Tents
Powerful Results in Pots & Garden Beds Too
How it Works
Hydro: 3ml A + 3ml B per 1L
Soil: 4ml A + 4ml B per 1L
Feed Your Plants
Watch Them Thrive
Hydroponic Precision Feeding
Unlock Explosive Yields with Precision High-Performance Nutrients
Eliminate the variables that hold your harvest back. eGrow A&B delivers 100% solubility and pH stability, ensuring your plants get exactly what they need, every single time
Fast turnover crops
Leafy Hydro Crops
Accelerated Growth for Cleaner, Crisper Greens.
A strong fit for fast-growing leafy crops produced in hydro systems where clean nutrient delivery, even growth and easy repeatability are essential.
- Lettuce
- Spinach
- Rocket
- Kale
Heavy feeders
Fruiting Hydro Crops
Maximum Output for Heavy-Feeding Crops.
Well suited to hydroponic tomatoes, capsicum, cucumber and similar crops where nutrient control, crop consistency and performance through active growth matter.
- Tomatoes
- Capsicum
- Cucumber
- Chilli
Clean indoor production
Hydro Herbs
Designed for reliable herb production in hydro and indoor systems.
Ideal for growers producing basil, mint, parsley and coriander in controlled environments where stable feeding and clean reservoir mixing are important.
- Basil
- Mint
- Parsley
- Coriander
Media flexibility
Coco & Inert Media
A strong choice for growers using coco, perlite and inert blends.
Built for growers who want hydro-style control in coco or inert media systems where complete nutrient delivery and consistent mixing are essential.
- Coco Coir
- Perlite
- Clay Pebbles
- Rockwool
System ready
Popular Hydro Systems
Seamless Performance in DWC, NFT & More.
Useful across a range of hydro setups where precise nutrient delivery, reliable dilution and repeatable crop feeding schedules are the priority.
- DWC
- NFT
- Drip Systems
- Dutch Buckets
Serious growers
Commercial & Greenhouse Use
Commercial-Scale Consistency & High Output.
A professional option for greenhouse, indoor and commercial-style growers who want dependable two-part nutrition for repeatable crop performance.
- Greenhouses
- Reservoir Feeding
- Production Crops
See More Plants & Systems Suited To Hydro A & B
Leafy Hydro Crops
- Lettuce
- Butterhead Lettuce
- Cos Lettuce
- Spinach
- Rocket
- Kale
- Asian Greens
- Silverbeet
- Bok Choy
- Watercress
Hydro Herbs
- Basil
- Mint
- Parsley
- Coriander
- Dill
- Chives
- Oregano
- Thyme
- Lemon Balm
- Microgreens
Fruiting Hydro Crops
- Tomatoes
- Cherry Tomatoes
- Capsicum
- Bell Peppers
- Chilli Plants
- Cucumber
- Eggplant
- Strawberries
- Zucchini
- Melons in Controlled Systems
Compatible Media Types
- Coco Coir
- Perlite
- Clay Pebbles
- Rockwool
- Vermiculite Blends
- Inert Hydro Media
- Propagation Cubes
- Net Pot Systems
Hydroponic Systems
- DWC
- Deep Water Culture
- NFT
- Drip Irrigation Systems
- Dutch Bucket Systems
- Recirculating Hydro Systems
- Run-to-Waste Systems
- Reservoir-Based Feeding
Best Use Cases
- Indoor Hydro Gardens
- Greenhouse Production
- Controlled Environment Agriculture
- Fast Turnover Crops
- Clean Reservoir Mixing
- Repeatable Feeding Programs
- Professional Crop Production
- Precision Nutrient Management
Simple Hydroponic Precision
Mix
Hydroponics & Seedlings:
3ml Part A + 3ml Part B per 1L water
3ml Part A + 3ml Part B per 1L water
Potted Plants & Gardens:
4ml Part A + 4ml Part B per 1L water
4ml Part A + 4ml Part B per 1L water
Apply
RESERVOIR • IRRIGATION • DWC
For peak performance, ensure your reservoir pH remains between 5.8–6.2. Our chelated formula is designed to stay stable, reducing the need for constant adjustments.
Thrive
MAXIMUM YIELD • PH STABILITY
A complete mineral profile designed for rapid nutrient uptake and record-breaking harvests.
How Much to Mix
Hydroponic Nutrients A & B — Mixing Calculator
Choose the guide, enter litres, and we’ll calculate how many ml of Part A and Part B to add (per litre).
Add Part A to water, stir, then add Part B. Never mix concentrates undiluted.
Reviews From Our Gardener's
Reviews
5.0
★★★★★
Based on 3 reviews
★★★★★
Hydro system improved
My hydro setup has been much more stable since using this. Growth is consistent and plants look much healthier.
★★★★★
Grows great tomatoes!
Very happy with outcome when using on tomato seeds. Plants grew quick and strong. Plenty in the bottles so will last a long time. A great replacement for a brand I once used but is no longer in stock. Took a gamble on this and glad I did.
★★★★★
Wow, noticeably better growth and excellent value (read about my comparison)
I’ve been growing a range of plants in my hydroponic setup, mostly lettuce, kale, and spinach, and after switching to these nutrients, I’ve seen a huge improvement in growth and overall plant health. Everything in my setup stayed the same: lights, trays, timer, etc, so this was a fair comparison, and the difference was clear. My plants are growing faster, look more vibrant, and seem much healthier than when I was using the smaller bottle of nutrients that came with my kit. The cos lettuce (same seeds) also 'stronger' if thats possible!
These bottles are also great value for the volume you get. It’s easy to see why they come up as an Amazon recommendation. I didn’t realise how much of a difference nutrient quality could make until now.
I’ve attached a photo of my current setup (at about 4 weeks) so you can see the results for yourself. This is only half grown, I have run out of room. I think they are growing about 30% faster. Highly recommend this if you’re serious about getting better growth from your hydro system.
Wow, noticeably better growth and excellent value
(read about my comparison)
I’ve been growing a range of plants in my hydroponic setup, mostly lettuce, kale, and spinach, and after switching to these nutrients, I’ve seen a huge improvement in growth and overall plant health. Everything in my setup stayed the same: lights, trays, timer, etc, so this was a fair comparison, and the difference was clear. My plants are growing faster, look more vibrant, and seem much healthier than when I was using the smaller bottle of nutrients that came with my kit. The cos lettuce (same seeds) also ‘stronger’ if thats possible!
These bottles are also great value for the volume you get. It’s easy to see why they come up as an Amazon recommendation. I didn’t realise how much of a difference nutrient quality could make until now.
I’ve attached a photo of my current setup (at about 4 weeks) so you can see the results for yourself. This is only half grown, I have run out of room. I think they are growing about 30% faster. Highly recommend this if you’re serious about getting better growth from your hydro system.
Holden_
Verified Buyer
Been using this fertiliser in my hydro setup and the results have been very good. The lettuce is growing fast, full, and super vibrant. I like that it’s clean and doesnt stink, mixes easily, and works without clogging anything. Has made a big difference from the last fertiliser i used.
Sydney Farmer
Verified Buyer
Commercial Hydroponic Nutrients – Hydroponic Plant Grow Part A & B
Give your plants the expert nutrition they deserve. Developed by hydroponic farmers with 25+ years of experience, CompleteGrow A & B Hydroponic Nutrients Fertilizer is a powerful, two-part liquid formula that delivers complete, balanced nutrition to your hydroponic systems, indoor plants, and edible gardens.
Formulated using premium-grade minerals for maximum solubility and fast absorption, this dual-bottle system supports full-cycle plant growth—from root development to flowering and fruiting. Perfect for use with hydroponic setups, coco coir, soil, potted plants, and even vertical gardens.
Professional-grade 2-part nutrient system (A & B)
✅ Suitable for indoor, outdoor & hydroponic setups
✅ High-grade minerals for fast absorption & visible results
✅ Includes Calcium Nitrate, Potassium Nitrate, Magnesium & more
✅ NPK Ratio: 25 – 6 – 40
✅ Used by commercial growers, now bottled for home use
✅ Australian made with free shipping
✅ Suitable for indoor, outdoor & hydroponic setups
✅ High-grade minerals for fast absorption & visible results
✅ Includes Calcium Nitrate, Potassium Nitrate, Magnesium & more
✅ NPK Ratio: 25 – 6 – 40
✅ Used by commercial growers, now bottled for home use
✅ Australian made with free shipping
NPK Ratio
-
N
25
-
P
6
-
K
40
What NPK 25-6-40 Means (Hydroponic Nutrients)
NPK 25-6-40 is a hydroponic nutrient profile with higher N and K for fast vegetative growth, leaf colour, turgor and yield quality—plus sufficient P to build roots and structure. Ideal for leafy greens, herbs, fruiting crops and general “grow” phases in DWC, NFT, flood & drain, coco and soil.
- Hydroponic nutrients: Fully water-soluble minerals for clean reservoirs and rapid uptake.
- Performance ratio: 25% nitrogen (growth/green), ~6% phosphate (roots/structure), ~40% potash (vigor, flavour, resilience).
- Two-part friendly: Commonly supplied as Part A & Part B to prevent precipitation and nutrient lockout.
Read More
In hydroponics, plants receive nutrition directly from the solution, so the NPK balance matters. With 25-6-40, nitrogen (N) supports chlorophyll production and leafy biomass; phosphorus (P) underpins root growth, energy transfer and early flowering signals; potassium (K) regulates water movement, enzyme activity and fruit quality. The elevated K in this profile helps strengthen stems, enhance colour and flavour and improve overall stress tolerance.
Our professional blends use high-purity salts such as Calcium Nitrate, Potassium Nitrate, Magnesium sources and chelated trace elements (Fe, Mn, Zn, Cu, B, Mo) for stability and availability. A two-part (A & B) format keeps calcium separate from phosphates/sulphates until diluted, preventing cloudy precipitates and keeping EC/ppm predictable.
- Use: Suitable for hydroponic systems (DWC, NFT, ebb/flow), coco coir and soil. Great for greens, herbs, tomatoes, peppers, berries and ornamentals.
- Mixing tip: Always add Part A to water and stir until dissolved, then add Part B. Never mix concentrates together.
- Pairs well with: Cal-Mag in very soft water, and a bloom booster later if you want extra flower density.
- Application: Follow label rates; apply to moist media. Monitor EC/ppm and pH for consistent results.
- Safety: Not to be taken. Keep out of reach of children. Avoid eye/skin contact and rinse edible plants before consumption.
FAQ
A & B formulas are separated to prevent nutrient lockout and ensure maximum absorption. This method is used by commercial growers for precise, stable results.
Yes! While designed for hydroponics, this formula works just as well for pots, garden beds, and even fruit trees. Just dilute as directed and apply regularly.
The approximate NPK is 25-6-40 — high in Nitrogen and Potassium for rapid vegetative growth, with enough Phosphorus to support strong roots and overall structure.
Most general fertilisers contain filler and limited nutrients. Ours delivers pure commercial-strength minerals, with macro and micro nutrients for full-spectrum plant health.
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