An OASE magnetic glass cleaner for aquarium glass up to 10mm thick, clearing algae and build-up from the inside without wetting your hands. Place one half inside the tank and the other outside, then wipe to clean.
A genuine OASE BioPlus 20ppi blue coarse replacement filter foam, suited to the BioPlus 50, 100 and 200, letting you customise coarse and fine media to your aquarium's filtration needs.
A 50mm flat O-ring gasket for external pond filter inlet and outlet fittings, keeping screw connections watertight as the original seal wears, flattens or splits over time.