the uth will not increase the ambient temps by much. uths will only create a surface temperature. to raise the ambient temperature you have to use a heat lamp or space heater. if youre already using a heat lamp then you have to increase the wattage of the bulb. a 60 gallon tank will be hard to heat you may even need two heat lamps. a high watt bulb on the hot side and a lower wattage bulb on the cool side. hope this helps you out!