I am on my 4th week of cycling my new 125G tank (Only have 1 Clown, cleaner crew, and a feather duster my friend gave me). I went with a 4x96W JBJ retrofit for my 6 inch canopy. I went with PC instead of Halide cause I was worry about heat problem. Well, I got heat problem with PCs also. My temperature is at 83-84F when the lights are on and 77-78F when they are off. I did the put fan in my cabinet and on top of my refugium but if it helps, it's minute. I am going to get 2 fans for my canopy. I am trying to avoid a chiller since it will heat up my room. Will canopy fan help or getting a window AC unit for the room help to reduce it to 78F? If neither, I will probably get a chiller reluctantly. Danm, I should have got Halide if I knew I'll have this problem. Another thing I was thinking of was getting rid of my lights and canopy and just hanging a Halide unit. Not my wife top choice but she thinks it's better than chiller. Will heat still be a problem with this setup? Any help is appreciated.