Right got my three foot viv. 150 w ceramic with hotspot 93 odd.12 inches in from left wall. Cant get cool end above 77(was ok with heating on!) Could i put a heatmat at cold end on pulse stat set at just over 80 And is it ok if its got the water bowl on the heatmat and cool end hide. Room temp last night next to viv was 66. Shop opens soon!