Ok, so I have some experience here... not in the good way. why wont this stuff just leave me alone! I have battled this many times in my 6+ years with this tank... I have great flow - reading 0 on the No3, Po4, and I am now using Topic Marin Bio actif salt. last week did a 120 gal water change!! then this week followed up with another 30 just to be safe. I have a 180 bow front - and about a 45gal (water volume) sump/refug. a massive skimmer that skims like a beast (Deltec ap 702). I have Ozone on, UV on, I do have the thing packed with rock (and I mean a lot!). Ok, so I have a lot of fish too, but all small. I have only been feeding spiralina flake (sp). and not that much. Since the big change I have another outbreak of red slime - what gives??? I am now in a non - photo period for 2 days, and will not turn on for another to get rid of it. Oh, I have 2 dolphin 3600's on the tank, one for main return and the skimmer feed, the other on a CL. thanks for any help!
Matt