I have had a few issues with the temp of the tank. I have found i can keep the tank around 74 if i keep the house around 69... its has effects on my bills a bit, but not much... I dont really wanna invest $500 in a chiller so that is my solution. with the stock lighting I guess its just one of the issues with tank during the summer months. But once it starts to cool down I dont think it will be an issue... I can imagine the heat would be a much bigger issue in Miami then it is here in Colorado. I do know you can rig up your own little LED invention under the hood with zip ties and screws that works just fine (my LFS did it and showed me their invention)... Im pretty sure there isnt any LEDs made to fit the hood to replace the lights... you just gotta get kinda creative.