Replacement bulb for Smart UV Sterilzer, which fits inside (as shown in picture).
The SMART UV product line is very effective at reducing microorganisms in water using ultraviolet light. These high-quality UV sterilizers feature a watertight sealed design and can be used safely both indoors and outdoors. They are an excellent choice for everything from small koi ponds to large recirculating systems.
More aquatic professionals choose SMART UVs over competing UV brands. The optimized design maximizes UV-C output and overall performance. Featuring a durable heavy-wall construction and manufactured using the highest quality materials you can expect years of trouble-free operation. All models are designed to operate safely in a wet, outdoor environment. The SMART UV reduces microorganisms through ultraviolet light.