Finest Filters quality replacement UV bulbs compatible with Laguna Pressure Flo pond filters. These bulbs have a 4 pin fitting at one end and are a perfect replacement for your Laguna Pressure Flo pond filter. Please ensure the correct wattage bulb is selected for your filter model. The Pressure flo 2500 and 5000 filters have an 10w/11w bulb. The 8000 model takes a 20w bulb, and the 12000 model takes a 25w bulb. It is recommended to change the UV bulb every 6-12 months, as the efficiency of the bulb diminishes over time. Regular replacement of the UV bulb and filter media will help keep your pond water clear and free from algae. Safety Note: These Replacement UV bulbs are NOT for aquarium use or aquarium lighting. For use within fully enclosed external canister filters or pond clarifiers only. Under no circumstances should you look at any illuminated UV bulb with the naked eye. Please Note: The wattage varies on these bulbs between 10w and 11w, but both will work the same.

Safety Note: These Replacement UV bulbs are NOT for aquarium use or aquarium lighting. For use within fully enclosed external canister filters or pond clarifiers only. Under no circumstances should you look at any illuminated UV bulb with the naked eye. It is recommended to change the UV bulb every 6-12 months, as the efficiency of the bulb diminishes over time. Regular replacement of the UV bulb and filter media will help keep your pond water clear and free from algae. Please ensure the correct wattage bulb is selected for your filter model. The Pressure flo 2500 and 5000 filters have an 10w/11w bulb. The 8000 model takes a 20w bulb, and the 12000 model takes a 25w bulb. Finest Filters quality replacement UV bulbs compatible with Laguna Pressure Flo pond filters. These bulbs have a 4 pin fitting at one end and are a perfect replacement for your Laguna Pressure Flo pond filter.