gKM3W clip-On UV - an affordable & real UV for small aquariums Keep Your Aquarium crystal clear Reduce water changes Just clip on to your hang on filter converts most filters into a UV filter Perfect for aquariums up to 20ga Lamp contains Mercury Manage in Accordance with State Disposal Laws

gKM3W clip-On UV For aquariums up to 20 gallons The gKM3W clip On UV allows water flow in direct contact with the UV lamp making it extremely efficient Keep your aquarium crystal clear & reduce water changes Simply clip On to your filter converts most filters into a UV Filter Leave running 247 for the first 2 weeks Works best with hang-on filters that have a flat or near flat water outlet 2 inches (55cm) wide or wider May not work well with a filter with a curved water outlet LED signals need for replacement UV bulbs lasts for 6 to 9 months assuming constant use Sealed UV bulb design Once your water is clear for a full week Use your clip On UV System as need to maintain perfect clarity UL listed EPA Est # 093568 comes with UL plug only suitable for US market