Aug 31, 2013 #1 VinnyLLU Aquarium Advice Regular Joined Aug 4, 2013 Messages 97 Is RO/DI water necessary for fowlr or can I just use regular reverse osmosis drinking water?
Sep 4, 2013 #2 dmolavi Aquarium Advice Addict Joined Jun 20, 2012 Messages 2,123 Location Sewell, NJ I think for FOWLR, RO is fine. Reefs need the DI.
Sep 4, 2013 #3 TheTodd Aquarium Advice Addict Joined May 26, 2012 Messages 3,111 Location Palm Springs, CA I agree. I've never used RODI for FOWLR and have never had problems.
Sep 4, 2013 #4 Gregcoyote Aquarium Advice Addict Joined Feb 12, 2011 Messages 8,423 Location Columbia, Missouri Just grows algae faster. You either remove the tap water DOCs with the RO/DI filter or algae will.