You assume OP has a misting system, and one that runs enough to require drainage.
based on my experience the solution is never, get a bigger heat lamp.
As long as OP can get cage temps into the 60's and the basking area into the 80's, they should be good.
Very few cham species require nights above 50 and days above 65 and sunny.
Panthers and vieleds do just fine with days of 65f, unheated nights, and 80-85f basking areas.