The primary heat source can be central heating, heat tapes or pads, or radiant heat. A secondary heat source for a "hotspot" is then positioned at one end of the cage. Lights should not be used as heat sources since this will interfere with the photoperiod. | The primary heat source can be central heating, heat tapes or pads, or radiant heat. A secondary heat source for a "hotspot" is then positioned at one end of the cage. Lights should not be used as heat sources since this will interfere with the photoperiod. |