Im using a UTH with a hydrofarm thermostat. ill have to check the humidity in my local area it changes so much since i live in pa. the humidity in the air today is 61%. ill have to look up the salt test and do it this evening i just want to make sure things are as close to perfect husbandry wise as possible. i know as soon as he out grows his tank he will be in a tub. this tank shananiganz is next to impossible to control.