I've had an Eshopps S-200 in my heavily stocked Reefer 450 for almost a year now, and am quite pleased with it. It's got some great features, like a super effective and quiet Sicce pinwheel pump, a fantastic bubble plate, a clear Venturi inlet (so you can see if a snail or something else gets sucked/stuck in there, it's happened to me with money cowries), body that removes from the base by just twisting off (no screws, can be done easily in-sump), adjustable aspirator with ozone port, etc. Some feel the plastic is too thin, but mine has held up well so far (and I use ozone); I clean the body out monthly at the sink, and see no evidence yet of premature wear. In fact I just bought a second one for a new almost identical tank setup. For your tank, an S-300 might fit the bill nicely.