PH Osmosis / StabilizerKeeping your reservoir pH balanced with RO water can be a little tricky. Due to its very low ppm, RO water is prone to dramatic fluctuations when nutrients are added or even just from exposure to air that's why we formulated PH Osmosis Stabilizer. It provides the perfect blend of minerals to RO water so it maintains pH while not causing any unwanted chemistry. After adding it, you can implement other nutrients without worrying about drastic changes in