Well I did it! I took the plunge and purchased a 24 x 24 x 24 cube today. It is pre-drilled and the custom stand will be delivered within 2 weeks. Until today I had researched and decided on a 29 gallon all-in-one cube. However, taking my husband to the LFS proved to be the golden ticket and I walked away with a MarineLand 60 gallon instead. My tank came with plumbing and I am now researching a sump and pump. Am I correct in understanding that I need about 600 gph? Can anyone recommend a good quiet pump? I am looking at a sump on Ebay - "20 GAL HIGH SUMP KIT 24" x 12" x 17" custom protein skimmer sump aquarium filter". Hoping I am on the right track.