I use heat lamps,cause I prefer for the tank to stay warmer,especially since I live in NY and it can get cold and cooler during seasons...mats don't heat the tank,they heat a spot. But whatever works for everyone's snake is what matters most. (BECAUSE THERE IS NO ONE RIGHT WAY TO SET UP A TANK ( a few certain ppl here think there way is the only way)..And yeah with bulbs running and heat mats running 24/7 for two tanks..my elec bills gone up about $25-$30 a month sucks but worth it.