The 5w replacement uv bulb from Blagdon is single ended and for use with in-pond pumps and mini-pond filters. Easy Fit UVC lamp.

Product Details;

• Easy to fit single ended 5w PLS bulb.
• Minipond 4,500/9,000 Filter,
• Minipond 4500 UVC,
• Inpond 5 in 1 2000,
• Inpond 5 in 1 3000