Description
The GrowMax RO unit for low mains pressure
The GrowMax Max Pump 700 delivers up to 700 litres a day, around 30 litres an hour, of purified water — and unlike every other GrowMax RO unit, it has a pressure pump built in. That means it holds pressure across the membrane on supplies that would leave a standard unit struggling, with nothing extra to plumb in.
Key Benefits
- Integrated pressure pump — low mains pressure is not a barrier, no separate booster kit needed
- 700 L/day output — suited to medium grows, hydroponic setups and general garden use
- Efficient waste ratio — roughly 1.5:1 waste to pure water
- Removes up to 95% of salts and heavy metals, and up to 99% of chlorine
- Filters sediment down to 5 microns
- Indoor or outdoor install — works wherever the mains connection is
A weak or unpredictable mains supply leaves a standard RO unit starved of the pressure it needs to work properly, which is exactly the gap this unit's built-in pump closes.
How to Use
Connect directly to a cold mains supply — no separate booster pump kit is needed or compatible with this unit. For near-zero TDS, add a de-ionisation filter after the RO stage. Change the membrane and pre-filter on the same schedule as GrowMax's other units, roughly every 6 months to 2 years depending on use and input EC.
- Output: up to 700 L/day, approx. 30 L/h
- Pump: integrated pressure pump
- Waste ratio: approx. 1.5:1 waste to pure
- Removes: up to 95% salts/heavy metals, up to 99% chlorine, sediment above 5 microns
- Stages: 3 (sediment, coconut carbon, RO membrane)
- Membrane: high-flow 185 GPD
- Pump protection: low- and high-pressure switches
- Shut-off: automatic start/stop valve, pressure gauge
- Minimum inlet pressure: 40 psi
- Maximum inlet pressure: 90 psi
- Feed water limit: up to 1,000 ppm
- Connections: 3/8" inlet, 1/4" pure and drain lines
- Filter cartridges: 10" x 2.5" sediment and carbon
- Power: mains, pump via supplied transformer
- Warranty: 1 year
