Making the move to tubs...

Humidity's at 60-70 percent and I haven't noticed any condensation or anything. (And Nagi's not always by the holes gasping for air so I guess it's okay.

I'll change the prob placements tonight and fiddle with it some more to make sure the temps stay correct. Thanks again for the help!

For anyone still wondering, I do have a sodering gun that worked really well on the holes. But the heated screwdriver's a great idea for anyone who doesn't have a wood burner or anything else.