F fyrefysh New member May 19, 2008 #2 Yes, I have a Korallin Bio-Denitrator S1502 and it works just as it states. I haven't seen any side affects in the 2+ years that I have used it.
Yes, I have a Korallin Bio-Denitrator S1502 and it works just as it states. I haven't seen any side affects in the 2+ years that I have used it.