as for the Prizm… I do need to empty the cup every couple weeks so yeah, it is doing something… Re: algae growth in reef tank – 03/13/2005 BGA? I don’t know what BGA is but I will search the WetWebMedia site for it. So in the mean time while I search – the bubbles are something common? I don’t know that I “need” the phosphate removal – I know I did right after the hurricane when I got power back – but I am sure it can’t hurt to do it every other week. can it?? As for the Prizm… I do need to empty the cup every couple weeks so yeah, it is doing something… Algae Progression 3/2/06 Hi Bob, Just a further question. My tank has been establis