I was going to upgrade my heater in my 12g (10g tall) tank. I'm looking at the visi-therm stealth and deluxe models. For only a dollar more, should I get the 100w, or would that be overkill? I think I'd prefer the smaller size if 50w is plenty. The tank is in my kitchen, and the house stays around 70 degrees in the winter. Stock is: 6 neons, 2 corys, 1 gourami (soon). Thanks for any advice!!
