Quote Originally Posted by bp_pandora
also, both bulbs are 100w, is that still not enough?
If you're temps are not correct than no, it's not. You might need to look into using ceramic heat emitters which i think run all the way up to 250 watts (maybe even higher) and then you wouldn't have to switch them out. You could always try bigger bulbs first, but i don't think you're going to find more than 150w and those might not be strong enough. Maybe with running bulbs on both sides of the tank it will help a little more? You're really going to have to start experimenting. Maybe even running three bulbs across the top to keep the temps up. 50 - 100 - 150 all the way across? It's hard to tell over the internet, you kind of just have to keep trying things until you get it all set.

Walmart and Target both have the digital thermometers. They are near the tools and fans in both stores. I would confirm that those temps are accurate with a digital before I went spending a ton of money. I don't trust those round plastic ones at all.

-adam