Awesome site, I have finaly found a site for people with big tanks. Mine a 500 gallon cube 72x60x30. All 4 sides are view able with each side a different eco system. SPS corals on one side, LPS on another ect.. I run 4100 watts of halides total, 1.25horsepower chiller. 5700 gph close loop pump, 150 gallon refugium. I use natural sea water trucked in and held in 3 large storage tanks, 50 gallons per week water changes. Tank has been up and running for 9 months. I can't wait to cruz around this site, it is hard to find supply items for large tanks.