Coral Reef Forum

RO water is water pruified by Reverse Osmosis.  Tap water is pressurized forced through a semi-permeable membreane.  This semi-permeable membrane only allows the tinyest of particles to pass though, such as water.  Therefore effectivly removing 99% of water impurities. 

  Tap water contains thing such as chemical's, minerals, bacteria and nutrients.  Using RO water can help prevent excessive algea growth, create a stable pH level and reduce the chances of livestock loss. 

  Click the link it will take you to Big Al's Online, once there search "revese osmosis unit"

If anyone can, please eleborate on this topic thanks.