I have a 10-gallon aquarium that is consistently hot in the summer. Part of it is undoubtedly due to my apartment, which only has a window A/C unit in the kitchen, and I think the lights I have in it are contributing. Is there anything I can do about this? Are there lightbulbs that are specifically designed to not get as hot? The ones I have now are 10W fluorescent bulbs. Any suggestions would be appreciated.