Using your Exo Terra Swamp Basking Spot Bulb is easy. First, choose the right wattage for your terrarium size. The 50 - watt is good for smaller set - ups, 75 - watt for medium ones, and 100 - watt for larger terrariums. Install the bulb in a suitable lamp fixture inside your terrarium. Keep in mind that this bulb is splash and mist resistant, but avoid direct and heavy water splashes. When it comes to maintenance, simply turn off the bulb and let it cool down completely before cleaning. You can gently wipe the outer sleeve with a soft, dry cloth. Don't use any harsh chemicals as they may damage the extra - strong neodymium glass. If the bulb stops working, replace it with a new one of the same wattage.