what is the average size of a tank raised false perc. and BTA? I am holding off on my reef tank plans until February(income tax!!!) has anyone successfully kept a BTA in a 20g tall? i might be getting a 40g or 55g come february depending on local deals and craigslist LOL. BTW, i plan on having one BTA, 2 false percs, some cleaners(suggestions?), and some polyps. plus i'll have either a 10 or 20 gallon sump. and corallife super skimmer.