UV lamps age: long after a tube stops looking dim, its sterilising output is on the way down. This direct-replacement lamp fits the Jingeye JY-UV620 UV canister filter, so you can swap in a fresh tube and keep your aquarium water clear of the algae and microbes that UV light targets.

Good to know:
– Fits the Jingeye JY-UV620 UV canister filter — check the model number before ordering
– Replaces the lamp tube only; the filter housing stays in place
– A straightforward DIY swap for aquarium and fish tank UV filtration
– UV sterilising helps control green water in fish tanks