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Mist Maker Ultrasonic Humidifier Price range: £51.99 through £184.99 Inc VAT
GrowMax Water Filter Systems Price range: £84.99 through £339.99 Inc VAT
GrowMax Reverse Osmosis Filters
Price range: £139.99 through £1,319.99 Inc VAT
GrowMax Reverse Osmosis systems deliver clean, low-EC water for hydroponics, gardening, aquaponics, and aquarium use. Choose from compact 285 L/day units to high-capacity 3000 L/day systems.
Description
GrowMax Reverse Osmosis Filters
GrowMax Reverse Osmosis Filters are designed to give growers and aquarists the purest possible water for consistently healthy plants and thriving aquatic environments. These systems dramatically reduce or remove chlorine, sediments, heavy metals, salts, pesticides, herbicides, nitrates, VOCs, and other contaminants that compromise nutrient uptake and destabilise pH.
Whether you need a compact RO system for small grow rooms or a high-output unit for large-scale hydroponics, GrowMax offers a model to suit every setup. All units provide fast, reliable filtration with no waiting around—simply connect, run, and enjoy purified water with lower EC, improved nutrient performance, and reduced risk of nutrient lockout.
| Model | Daily Output | Flow Rate* | Key Features | Ideal For |
|---|---|---|---|---|
| MiniMax 285 L/day | Up to 285 L/day | ~10–12 L/h | Compact RO system, removes chlorine, pesticides, chemicals. Includes tap adaptor, GAC pre-filter, 75 GPD membrane. | Small growers, home hydroponics, hobby setups |
| Power Grow 500 L/day | Up to 500 L/day | ~20 L/h | Removes up to 95% of salts & heavy metals, up to 99% chlorine. Lowers EC and stabilises pH. | Medium hydro systems, soil growers, coco growers |
| Maxquarium 000 PPM 500 L/day | Up to 500 L/day | ~20 L/h | RO + de-ionisation for ULTRA PURE water. Produces 000 PPM, removes 100% salts & heavy metals. Ideal for aquatic life. | Aquaponics, aquariums, sensitive plants, algae control |
| Mega Grow 1000 L/day | Up to 1000 L/day | ~40 L/h | High-output RO, removes 95% salts/metals, 99% chlorine, lowers EC, prevents lockout. | Large grow rooms, multi-system hydroponics |
| Growmax 3000 L/day | Up to 3000 L/day | ~125 L/h | Industrial-scale RO with powerful contaminant removal and heavy-duty throughput. | Commercial growers, large facilities, high-demand water processing |
*Flow rate works relative to your water pressure. Low pressure = lower flow rate.
Why use Reverse Osmosis water?
More precise nutrient control
Better fertiliser efficiency—nutrients dissolve and absorb more effectively
Reduced contaminants—no more mystery minerals or hard-water salt problems
Optimised pH stability—less drift and easier monitoring
Protects delicate root systems and microbial life
For aquaponics or aquarium keepers, the Maxquarium model includes a full de-ionisation stage, producing 000 PPM ultra-pure water ideal for sensitive species, stable pH, and reduced algae growth.
Additional information
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Shipping & Delivery
DELIVERY TIMEFRAME
We aim to process and dispatch all orders within 2 working days of being placed. Wherever possible, parcels are sent on a next working day service to ensure you receive them quickly and reliably.
When your order is dispatched, you will receive a confirmation email with tracking information so you can closely monitor your delivery every step of the way.
Please Note: Delivery times may slightly vary during busy periods, or due to courier service disruptions. Rest assured, we always do our best to get your order to you promptly.
