Originally posted by crazy4reefs
yes you need to put it on one side of the tank(underneath the tank incase you didnt know) that way they willl have a warmer side and a cooler side which is needed. also you need to have something under all the corners of the tank to lift it up some for air flow, room for the cord and so the tanks not resting on the heating pad. hth
ding ,ding,ding!!!!