Twin Value Pack 13 Watt PLS UVC Germicidal Bulb Gx23 Base

Description PondH2o UV bulbs are designed for UV-C Filter & Clarifier systems for both Ponds and Aquariums. Value 13 Watt PLS UVC Germicidal Bulb Gx23 Base Two Pack so keeps your filter effective for a full 12 months. Germicidal lamps operate at 253nm to greatly improve the efficiency of your filtration system when water passes by the UVC lamp. PondH2o UVC bulbs work to clear your pond or aquarium water by removing unsightly green algae . The strong ultraviolet light breaks down the algae in the water. 11W – 9.2″ (234mm) 13W – 7.08″ (180mm) 9W – 5.2″ (134mm) 7W – 5.2″ (134mm) 5W – 4.13″ (105mm) The effective life of a replacement UV lamp is approximately 8000 hours. PondH2o’s compact PL-S H Type UV-C Germicidal Bulb allows for easy replacement.  The effective life of a UV lamp is approximate, after this point it will seem to be working but in fact the effectiveness of the lamp will be decreasing and need to be changed. Changing a bulb twice annually will usually be good enough to maintain the filter light unit. UVC lamps in water garden ponds utilize ultraviolet light to destroy or control algae, bacteria, and parasites. The UV radiation disrupts their DNA, preventing them from reproducing and causing harm. This helps maintain water clarity, reduce disease, and promote a healthier pond environment. Be sure to check out our Information Center for our Pond Blog on best tips to winterize a water garden koi fish pond!   Our most recent pond blog is regarding UV sterilizers, read more. As always, see our Facebook page for coupons and news.