Substrate Heating - I know this is a can of worms. I have read about the expensive way, the DIY way, the BioPlast way. I know that it supposedly helps. I haven't really seen any controlled experiments showing how much.
What I am mainly wondering about is whether BioPlast works, and whether anyone has successfully done total DIY for a ~120g tank? I am a little leery about sticking homemade electric wires in a tank full of water, and the expense of the commercial products is way too restrictive. If it's really important, makes a noticeable difference, and I can do it for under $100, I can probably add the money to the budget.
Thanks again for everyone's help. People from this list have been the best source of information so far.
Chris
***************************** Waveform Technology UNIX Systems Administrator