I have had my JBJ Nano Cube 12 gallon up and running, and I did DIY light mod so I have about 76 watts in the hood. However, they are running very hot, and I'm afraid of overheating my tank, burning electrical wires, etc. I was wondering whether anyone has had the same problem and if anyone has tried reversing the fans to blow in and push the hot air out?? ...or does that make any difference. Has anyone tried upgrading to stronger fans. I'm looking for some solutions from other Nano Cube owners! Also, does cooling the hood have any effect on cooling the water? :? :?