Twin Pack of Finest-Filters 18w PLL UV bulbs suitable for a range of pond UV clarifiers and sterilisers.

For optimum effectiveness, it is recommended to change the UV bulbs every 6-12 months. Regular replacement will keep your pond water clear and free from algae build up.

These bulbs are compatible with any filter system which has a 18w PLL fitting bulb.

We are a UK based company and hold all items in stock in our UK warehouse. Orders placed before 4pm will be shipped on the same day.

Dimensions:

Full length - 8.5 inches

Length of glass only - 7.5 inches