OK, so things have been going great since converting to a SWG. Probably helps that the bather load has been low ... generally just me, occasionally joined by 1-2 other grown-ups. Last night I had 4 college-aged girls in the tub, and this morning when I got in, low and behold, foamy bubbles on the top and an unpleasant looking brownish film around the filter compartment. The water itself still looks great - really clear. So, question is, what if anything extra should I do to make sure the water gets completely clean again? If I just leave it will the filter cycles (2 hours, 2x/day) be enough to clear it out over a day or two? Should I add clarifier or anything else to speed the process? Any suggestions are greatly appreciated!