a quick question for nep growers,i just purchased a micro waverble heat pad for my elderly dog ,but instead of lying on it he has made it his enemy and is trying to kill it,i was wondering if i could put it to good use under my hl tray of neps to boost the day time temps,is this a bad idea to heat the pots from underneath,i thought when i removed it i could get a bigger difference in day and night temps also,it should give off heat for over 6 hours,would be gratefull for any advice