PondMAX Pre-Filter Replacement Sponge F3 150mmx100mmx100mm

PondMAX Pre-Filter Replacement Sponge F3 150mmx100mmx100mm Thread size: 1/2 inch / 15mm BSP + 1 inch / 25mm BSP Open cell premium aquatic sponge. Ideal for pond and fountain pumps. Dual thread size. Increases efficiency of your pond pump. Provides mechanical and biological filtration for your pond. Trusted brand. Genuine replacement spare part. Buy from the fish pond experts, if you are unsure if this is the correct one for your filter please contact us and we can help!