2x250w MH with Ushio's and 2x96 actinics. Really bright and obnoxious lights....I have some serious heat issues and this tank design is not good for a confined space like the niche that it's in. This tank will be torn down and all the contents moved to the new the 210 thats being built and then this tank will become a FOWLR....Not enough ventilation for the chiller, so 90% of the time we have to leave the doors open, then my dogs figured out that there was a huge container of fresh water under the tank and started drinking out of my autotop off reservoir... For the life of me I could not figure out why the tank was going thru like 3 gallons of water each day, then I heard the distinct sound of "Slurp Slurp Slurp" and busted one of my boxer