Purified water grows healthier, more beautiful and longer-lasting plants than ordinary tap water. Your plants will flourish with our "better-than-rain" quality water. SpectraPure manufactures a wide range of the highest quality water purification equipment available. Benefits of Reverse Osmosis Water Maximizes nutrient uptake for faster growth and greater yields. Eliminates harmful mineral build-up which damages delicate root hairs. Stabilizes pH of recirculating rockwool, NFT and Ebb & Flow hydroponic systems. Ultra-high rejection TFC membrane eliminates up to 99% of harmful minerals, fluorides, chlorides, alkalinity, heavy metals, agricultural and industrial pollutants, chloramine, PCB's, MTBE, and arsenic.