Thanks everyone.

jsr,

That is good thinking.

Chris,

Thanks for the links -- I had seen the first one, but not the second.

Hoppy,

Yes, I liked jsr's idea too. If a cooling fan would help, I'll pop one on my tank tomorrow.

Anyway, here's what I'm thinking right now:

I already have 2 tanks (the 50G and a 10G), and I am planning on getting either a 120G or two 60Gs (tough decision). All of these tanks will be in a little 18' x 18' room. I think the best solution would be to get a little portable air conditioner that only gets run a few times a year when it is really hot. One thing I didn't mention is that I have been traveling a lot lately. I could easily put the A/C on a timer in the afternoons while I am away to be on the safe side.

I haven't priced out the A/C yet.