Originally Posted by
farebox
My K.I.S.S. Sump (Kept it simple), 20G long tank. Made an prefilter box out of an plastic food container from the Dollar Store, placed an 10ppi poret foam sheet and Pinky filter pad for the mechanical filtration. Next used three Poret foam sheets, 10, 20, 30PPI three inch sheets spaced approx. 2" apart. Remaining room in the sump houses two 300W heaters and the return pump. Also an bag of purigen. Just for extra bio filtration used my MR-1 reactor had laying around filled with Seachem matrix bio media. This has been running my 125G discus tank without any problems and have the best looking water clarity I've ever seen in the 50 yrs of fish keeping!