So one of my 120G tanks wasn't looking so hot lately. About a week or so ago I sucked about a years worth of scum out of the sump. I think I got about 25 gallons of the nastiest water out of there. Usually when I do water changes I just suck detrius and stuff off the rocks in the display
Little did I know what a huge impact it would have on the tank. The tank went from borderline being taken down to looking fantastic. The only thing that I did was remove all the detrius in the sump.
Get your reef on!!
Eric