Salt lamps require incandescent light bulbs that produce heat. 15-watt bulbs are most commonly used for all sizes. A 25-watt bulb is only recommended for XL & XXL lamps due to the heat they will emit.
*XL & XXL slt lamps are very large and heavy to move. They are usually placed on the floor as they are too heavy and large to place on a table or other riser.