I do already have a 20g with a locking lid that I kept my corn in. I found a good breeder an hour away from me. I think I'm going to try and set up the tank and see if I can get the parameters right before I go visit him.

The one thing I'm confused about is the temp probes. From what I've seen here they tape the probe from the thermostat to the bottom of the tank and put the uth on top of it... and then put a thermometer with probe in the tank, under the sub and right over the uth...

Why both? I don't really get that.