Have that red slime back in my new tank and I don't want to use chemicals to get rid of it this time. The last tank I had it in I think I was wasting my money on that stuff. It'll work at first but then its back. What else can I do. My water flow seems to be there so I really don't know else is really causing the stuff other than the lights. I have cut the time they are on to nearly half. Use to have the lights on from 6am to 10pm but now they are on less than 12hrs a day. Only have one fish in my tank along with some snails. :1zhelp: