hello everyone,ive desided to go with a diy sump for my 55 gal.i picked up a 22 gal. container for sump and a 3 drawer storage bin that fits perfectly for the tower...what do you think of this for a media setup [drawer 1] polyfiber pad on bottom...aquaclear sponges in middle...fuvial prefilter ceramic rings on top...[drawer 2] fiber wool [drawer 3] carbon pad on bottom with bio-max on top......and for the sump i was going to use lava rock as a bed bottom....does this sound ok? will this inped water flow?would anyone do it differently or is this pretty good??????