Swell's own PLL bulbs are suitable for use with a variety of UV units from a broad spectrum of manufacturers. Available in four wattages, from 18 to 55w.
These single ended bulbs have four pins on one end, which connects in to the unit. Developed to a high standard, our PLL bulbs keep algae at bay by passing UV light through the water, halting the development of algae cells. This process also wards off other pathogens from your pond water, which can cause cloudy water amongst other problems.
Not only are they are great product with a long life, but they are competitively priced, and available on a buy 2 get one free offer. Coupled with our excellent customer service you can be sure of a clean healthy pond quickly and easily.