HQRP 2-Pack 9 Watt UV-C bulbs.
The bulb requires to be replaced every 10-12 month depending on the environmental factors and the intensity of use.
Replacement Bulb compatible withTetra Pond, AquaTop, Jebo, Jebao, Sunsun, ViaAqua, Grech, etc. Aquarium Pond Clarifiers.