there is a few ways to do it, some pics and stuff in the DIY section. the way im going to do it is
buy a rubbermaid drawer set. like the ones that are stacked with 3 drawers
drill a big hole in the top of it for a hose to run from the tank to the tote, drill a bunch of small holes in the first drawer for a drip system, and maybe throw some filter floss in there. drill holes in the seconds on and fill it with sponges or scrubbies or something. and then in the third one is where water will collect to be pumped back up into the tank, will have to put a submersible pump in there to pump it back up. cheap, ez, and effective