Fluval U4 Filter Foam Pad 2pcs

From the Fluval range. Filter foam pad. Crucial first stage in the aqaurium filtration process. Captures large particles & debris for effective mechanical filtration. With a pore size that allows efficient water flow, less clogging & long-lasting filtration. Made to fit into the u4 filter chamber. Recommended that filter cartridges are changed once per month. 2pcs per pack.