MY CHILLER!!!!!! got this thing beggining of last summer and was going to set it up on my 90 gallon ( which I broke down ) ( should have kept that tank . so I came home last night to find my fish room temp over 80 and opened the window in the basement , turned on my ac . My fan was already running via my reefkeeper . the tank temp was about 80 as well . not that bad I know but since it was not that hot out and already hitting these temps I thought it time to dig the chiller out of storage clean it up , plumb it in and set the reefkeeper to control it between that and my fan it keeps the halides from heating up the tanks too much . when it hits 90-100 outside I'll need to run the ac . just wish it would stay where I programmed it when its powered down then I could have the reefkeeper do that too . anyway watch your temps . Happy reefing