Thanks for the input guys! I'm looking at around 800-1200g. I have not made my mind up if I'm going to so a 12'x3'x22" set up or turn the rear corner of the basement into a huge tank. I was just worried about how to heat it, and how to do water changes lol... I like the constant drip set up.. I was going to get an RO that is plumbed directly into the tank that added water from close to the bottom.. with a drain that was at the top that would run off outside.. not in a drain. I have never done a monster tank and there are plenty of them on this site. I knew this would be the place to get the best advice! lol I was planning on doing a good sump set up for filtration. Tank will have a few rays, aro, maybe a gar, then the biggest maybe on this would be GATF.. so nothing that is completely huge but some fish that could use the space. I think it would have a very small bio load lol. Rays being the biggest contributors.