The Growmax Water Reverse Osmosis Unit with a filtration capacity of up to 500 liters of clean water per day is ideal for horticultural and hydroponic use. It removes up to 95% of all salts and heavy metals and 99% of chlorine and sediment down to 5 microns in size. Get maximum efficiency from your nutrients and fertilizers, stabilize pH and promote the development of beneficial microorganisms in the soil. The unit reduces or removes salts, heavy metals, chloramines, nitrates, nitrites, sediment, impurities, rust, oxidation, herbicides, pesticides and volatile organic pollutants. The recommended water source parameters include a temperature of 25 °C, a pressure of at least 3 kg/cm2 and a maximum of 5 kg/cm2 and a PPM of maximum 550 (EC 1.1). The cartridge should be replaced every 6 months.