In StockPower Grow 500 Reverse Osmosis Filter
£224.96£249.95Save £24.99
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Description
The Growmax Power Grow 500 Reverse Osmosis Filter is a 3 stage RO filter that can deliver up to 20 litres per hour of low EC, nearly pure water - total output of the filter is around 500 litres per day.
The system effectively removes up to 95% of:
Salts, Heavy Metals, Chloramines, nitrates, nitrites, Chlorine. Sediment; dirt, rust, oxidation. Herbicides and Pesticides Volatile Organic Contaminants (Chemical Contaminants, Benzenes, Toluene, Oils, THMs, Detergents, PCBs).
Using RO water has 3 main benefits:
1. Removing the chlorine lets the soil biota flourish, especially if you are using bacterial or microbial additives.
2. Stable pH - RO Water has a pH of around 6.5, a good starting point for most plants.
3. Allows for more precise control of fertilization. By removing the background EC of you tap water, you deliver your plants a more balanced nutrient solution.
The filters on the Power Grow 500 last for around 12,000 litres or 6 months. We list the replacements in the dropdown above, along with a replacement membrane - this will need changing approx. every 9 months.
Other accessories available include a float switch and booster pump for use where the input to the RO filter is less than 40 psi.
Key facts
| Type | 3-stage reverse osmosis filter |
|---|---|
| Brand | Growmax |
| Output | Up to 20 litres per hour, around 500 litres per day |
| Removes | Up to 95% of salts, heavy metals, chloramines, nitrates, nitrites, chlorine, sediment, herbicides, pesticides and volatile organic contaminants |
| Water produced | Low EC, pH around 6.5 |
| Filter life | Around 12,000 litres or 6 months |
| Membrane life | About 9 months |
| Options | Complete system, replacement 150GPD membrane, replacement filter pack |
| Sizes | Complete System, Replacement Filter Pack, Replacement Membrane 150GPD |
| Category | Water Filtration |
How to use
Connect the filter to your cold mains supply and run the clean water into a tank or reservoir. It needs at least 40 psi: if your pressure is lower, add a booster pump. A float valve kit shuts the supply off when the tank is full.
Change the filters about every 6 months (12,000 litres) and the membrane about every 9 months. Both are in the options above.
RO water starts at close to zero EC, so check each feed with a pH and EC meter. For more water per day see the Mega Grow 1000 and Growmax 3000.
Questions
How much water does the Power Grow 500 make?
Up to 20 litres per hour, around 500 litres a day.
Why use RO water?
It has no chlorine, so soil life and microbial additives do well; its pH is stable at around 6.5; and it has no background EC, so you control exactly what goes into the feed.
What if my water pressure is under 40 psi?
Add the Growmax booster pump to bring it up to the range the filter needs.
