Chad I think its because you cleaned the skimmers so thats why it build up so fast...It happened to me b4 too...I bet the skimmate in the cup was not as dark as you ve usually had it.. also that lime wood airstone might also make it work fast too. oh yeah you ARE using the wooden air stone arent you because I ve made the mistake of using the other blue air stone and it just went crazy overnight,..when I woke up in the morning I ve had like at least 5 gallons on my hard wood floor....which just totally warped my floor.
