Okay so for some reason my tank has had floating particles for the last 3 weeks. It is a 180g tank. I️ do a 60% water change once a week. I have 2 canister filters on it, a sunsun 304b and an FX5. I️ also have 2 xl sponge filters with air pumps on each side of the tank. My stocking is a pair of Vieja Breidohri, one chocolate cichlid, 4 Geophagus pellegrini And 2 Rotkeil severums, also a few plecos. My tank has been perfect for almost 3 years now. These floating particles came out of nowhere. I️ hate my 2 canisters plumbed Into drilled overflows. Since I️ though this may have been the problem, yesterday I️ spent 10 hours gravel vaccing and then Undid all my filters (that actually took 12 hours to plumb back in may). And then capped the overflow off and used the canisters conventionally over the back. I’ve tried both with powerheads for a week, and then with powerheads turned off for a week. I’ve tried doing multiple 60-70% water changes in a week. I’ve tried not feeding for 2 and a half days. I️ don’t know what to do anymore. Close to breaking down the tank and selling everything as it is becoming unenjoyable for me. I️ Work too hard on the tank for no satisfaction. Fish all seem perfectly fine.