I wouldn't recommend a fluval... and I'll tell you why. I bought a 404, and the thing was nice. BUT... it was hard to pull it appart if you ever had to clean it out, and I wouldn't recommend that anyone put medications in there just because of the need to rip it appart to get in there. Some people say to take the bio material out of it and just use it for water flow. But then again, who wants to spend $100++ on a powerhead?
They're AWESOME for freshwater... or even saltwater if you clean it out every week. But for me, I'd go with a couple powerheads, 1.5-2 lbs rock/gal
, sand bed, and a skimmer. Nothing else needed IMO
. Plus, if you get yourself a sump, you can hide all your equipment underneath the stand!