Description
GrowMax's largest reverse osmosis unit, for rooms where the mains water is the limiting factor
The GrowMax 3000 is GrowMax's biggest reverse osmosis system, producing up to 125 litres an hour and 3,000 litres a day of pure water from two 500 GPD membranes running in parallel. It strips the salts, chlorine and sediment sitting in the background of every feed you mix, so your nutrients do the work instead of fighting whatever came out of the tap.
Key Benefits
- Removes up to 95% of salts and heavy metals before they reach your tank
- Removes up to 99% of chlorine and reduces sediment to 5 microns
- Drops your starting EC — you control the whole feed rather than topping up what's already in the water
- Steadier pH — cuts the swings caused by hard water
- Protects equipment — reflectors, carbon filters and reservoirs stay free of mineral scale
- Supplied complete — inlet tubing, connectors, carbon pre-filter, both membranes, pressure gauge, outlet tubing and shut-off valve
Hard or heavily treated tap water pushes your starting EC and pH around before a single gram of nutrient goes in, which is why growers on the harder end of UK mains water lean on reverse osmosis rather than fighting it feed after feed.
How to Use
Plumb the unit onto a cold mains supply of 4–6 bar (57–85 PSI) — higher than GrowMax's smaller units need — and cold only, up to 25°C. Change the 500 GPD membranes every 6 months to 2 years depending on use and input EC, and the carbon pre-filter every 6 months. Fit a float kit if the unit will run unattended.
- Output: up to 3,000 L/day, 125 L/h
- Membranes: 2 x 500 GPD, running in parallel
- Inlet pressure: 4–6 bar (57–85 PSI) minimum-maximum
- Water supply: cold only, max 25°C
- Removes: up to 95% salts/heavy metals, up to 99% chlorine, sediment to 5 microns
- Cartridge life: approx. 40,000 litres filtered
