I am currently awaiting my new arrival. My tank is 75 gallon with 20 gallon sump. It has been running for 3 years with soft corals, small fish and 2 octopus at different time. Water temp is 69 degrees, nitrate 20ppm, Ph 8.2. Picture of tanks attached. The smaller 30 gallon tank next to the DT is to house my live feeders from the Long Island Sound (Crabs, Shrimp, Feeder fish, etc...).