I just set up a 20 gallon long and it's ready to go except for the lights. It will be at least a month before I get my Kessil, but I have one of those Hagen Glo T5 ballasts that I used to run on another tank lying around. I was just curious if I were to lay the bulbs across the tank would the heat of the bulbs cause any problems with the plastic rim or not? I know the bulbs get hot, but how hot? I don't want to melt the rim or anything. Thanks.
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