Fluval Spec Replacement Foam Pad

The Fluval SPEC / EVO/ FLEX Foam Filter Block provides effective mechanical filtration by trapping large particles and debris. Foam Filter Block is suitable for: EVO 13.5 G (52 L) (Item# 10531), SPEC 2.6 G (10 L) ( Item# 10517, 10515), SPEC 5 G (19 L) ( Item # 10516, 10518), EVO 5 G (19 L) ( Item #10528), and FLEX 9G (34 L) ( Item # 15004).