Can anyone see any problems with this? My viv(after the 80's temps in the summer)...now does not top even 70...and probably drops to the 60's at night. May be a bit nippy for the frogs I have in mind(RETF's). I've thought of possibly getting an aquarium heater and using it to warm the water under the false bottom to about 75 degrees, thus warming the tank also during the night. Does anyone see any problem with that?