Growmax Reverse Osmosis System 500LGrowmax Reverse Osmosis System 500L Reverse Osmosis System for use in hydroponics and gardening Produces up to 500 L d No waiting, produces up to 20 L h! Key Values Eliminates up to 95% of salts and heavy metals. Helps to stabilise the pH. Eliminates up to 99% of Chlorine. Lower the EC. Improves fertiliser performance and protects beneficial microorganisms in your soil. Avoid nutrient lockout. More food for your plants. This product effectively