Alright. I try! Theres been a number of times my house filter gets clogged in the night, and it will overflow my Cetus screen box. When this happens, solids that are on the screen get washed off by the high water and then go straight into the house filter and then end up passing that and into my bio box. I thought I read somewhere that heterotrophs get rid of solids, and autotrophs rid toxins from gills and urine?