You don't need a substrate heater. They are a big waste of money for a poor
college student.

If your plants died, see this page:

http://www.fortunecity.com/lavender/.../881/dying.htm

My guess would be that your plants died because you don't have enough light
over the tank. You'd be much better off putting your money toward better
lighting than toward a substrate heater.

Alternately, you could choose plants that do well in low light. That would
certainly be the most economical choice.


Leigh

http://www.fortunecity.com/lavender/halloween/881/