Power Grow 500 RO Unit Produces up to 20 L/h of pure water and up to 500 L/D Reverse osmosis system optimized for gardening and hydroponic uses, up to 500 L/D of pure water. Eliminates up to 95% of all of salts and heavy metals. Also eliminates 99% of chlorine and sediments down to 5 microns, immediately!Growmax water Reverse Osmosis filtration units give plants clean water and the best opportunity to grow the best crops. Water conditions: Temperature 25ºC Pressure: Min. 3 kg Max. 6 kg Quality (500 tds or ppm) Other conditions can reduce the water production. Replace cartridges every 4 - 6 months.Reverse osmosis system optimised for gardening and hydroponic uses, up to 500 L/D of pure water. Eliminates up to 95% of all of salts and heavy metals. Also eliminates 99% of chlorine and sediments down to 5 microns, immediately! Eliminates 95%, of salts and heavy metals. Helps stabilize pH. Protects beneficial micro-organisms in soil. Get 100% effectiveness from your nutrients and fertilizers. Great for organic growers!