I would size your skimmer around your pump. I was going to suggest avast marine. I have a couple of the diy reactors that I use for biopellets and zeo stones. Easy to assemble and work great. I was have been tossing around upgrading my skimmer to one of those or adding it in as well. They perform well for the price I have heard. You also get a deal if yOu can afford to get the whole kit with skimmate locker, swabbie, recirc upgrade. A very gOod deal.
Anyway, your probably going to need at least 18" for your reaction chamber and then how ever big you can get your collection cup. Bigger is obviously better.
Anyway, your probably going to need at least 18" for your reaction chamber and then how ever big you can get your collection cup. Bigger is obviously better.