So I'm in the process of making my own sump for my 75g FOWLR
aquarium using the rubbermaid bid and 5gal bucket method. (in case you havent seen it, its like the 2nd vid on youtube when you search for DIY Sump). Anyway, in the video he only uses those cheap pot scrubbers as bio balls in the bucket, with a small layer of filter media on top. I intend to make mine a little more elaborate. I want to actually make layers in my bucket conisiting of Filter media, Bioballs, then a layer of activated carbon. That being said im having a hard time thinking of a way to make these layers in a 5gal bucket. I dont know how i am going to be able to seperate them like a normal canister filter would and not have them all meshed together... Any Ideas?