I have a 125g with Malawi cichlids. Lots of large rocks and caves but no gravel or substrate of any kind. It has a large wet-dry trickle filter as well as a Fluval 305 and a Fluval 4 in tank filter that are mainly for water polishing. Water parameters are good but I'm noticing that I have a lot of waste particles floating around in the tank all the time. I never really had this problem before; does anyone have any suggestions? Obviously I could keep less fish, feed less, etc. but does anyone have any other tricks that work for getting rid of floating debris? Thanks.