I just installed a Coralife "Aqua-Chill" chiller on my 210 reef. I run 3-400 MH 20k XMs & VHO actinics. My tank temp varies between 1- 1.5 degrees Speaking as a consumer, not a LFS owner, all I can say is WOW. I have access to may different brands. I wanted to give the Coralife a try. I can say I'm more than pleased with it.