In StockMega Grow 1000 Reverse Osmosis Filter
£314.96£349.95Save £34.99
In stock
Available from our Bristol shop
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Description
The Growmax Mega Grow 1000 Reverse Osmosis Filter is a 3 stage RO filter that can deliver up to 40 litres per hour of low EC, nearly pure water - total output of the filter is around 1000 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 fertilisation. By removing the background EC of your tap water, you deliver your plants a more balanced nutrient solution.
The filters on the Mega Grow 1000 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 40 litres per hour, around 1000 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 filter pack, replacement membrane |
| 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. RO filters need at least 40 psi: if your pressure is lower, add the high flow booster pump. A float valve kit shuts off the supply when the tank is full, so clean water is always ready.
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 you build the feed up from scratch: check it with a pH and EC meter. See all water filtration.
Questions
Why use reverse osmosis water?
Three reasons: no chlorine, so soil life and microbial additives do well; a stable pH of around 6.5; and no background EC from tap water, so you control exactly what is in the feed.
How often do the filters need changing?
The filters last around 12,000 litres or 6 months. The membrane needs changing about every 9 months.
What if my water pressure is low?
The filter needs at least 40 psi. Below that, fit the Growmax booster pump.
Growers’ guides
- Reverse Osmosis (RO) Water for Growing: Do You Need a Filter?What reverse osmosis (RO) water is, why growers use it on hard tap water, the RO filters we sell, what to add back, and when you can do without one.
- pH and EC: Meters, Test Kits and pH Up/DownHow to test pH with a meter or a pH test kit, measure EC, read the makers' targets, use pH Up and pH Down, and calibrate and care for a meter.
