I am still going back and forth on length at the moment. Either 6 or 8 feet. Since we are still renting I am thinking 6 but if I get a tank built I want to be completely happy with it and would ultimately love a 8 foot tank. Ideally the dimmensions right now would be 8 ft x 3 ft x 2 ft. I have been looking at reefcentral alot lately trying to get pictures/ideas of what I like. This is where I came upon the peninsula style. I wish I would have swung by your house before you tore yours down. So it does seem that flow might not be a problem...