^^ the pic above, the tank on top registers 4 degree difference, its hotter... i didn't think heat actually rose... like that atleast.

I am trying to test every position to put the thermostat probe, but securing it on bottom so its actually physically touching the heatpad, i find almost impossible... What kind of tape can I use for the under side of tank? (it won't be touching the heat pad)

but are there ways I can make it stay, even if it touches the heat....


thanks!