I just got a new bp... ive been reading many things to the point where im kind of confused.... I have a 20g tank ... a heating pad on one end in the corner with branches and tree... i have a 40w day lamp and a 15w nite on the other side directly over the hide....do i need the lamp because the side with the pad should be the hot side? and if so should i put the hide over the heating pad and put the trees and branches on the other side after the lamp is gone? from what ive reatd the heading pad doesnt make that big of a change in temp so right now would that be considered my cool side and the lamp is my hot side?