Looks great! I want to set up a large scale reef. I'm looking into building a plywood tank in the range of 5-700 gallons but man it's a huge undertaking just getting it built not to mention upkeep. The way I have it designed I would plumb the overflow through the floor into my basement and run a 250-300gal sump. I want to do it sooo bad...Becky.....not quite as enthused by the idea.