SuperFish Surface Skimmer Internal Filter SuperFish Surface Skimmer Internal Filter – Dirt, fats, proteins and micro-organisms form an oily film at the surface of the aquarium. With the Surface Skimmer this dirt is continuously extracted, so that the water surface remains clean and clear. This ensures a better oxygen exchange at the water surface and the light can penetrate deeper into the aquarium. The Surface Skimmer is easy to install and the sponge is easy to clean. Replacement foam also available to purchase, which come in a pack of 2. Available: Surface Skimmer 300 Surface Skimmer 300 Foam (2pcs) A superb device for keeping the surface of your water sparkling clean which improves light penetration alongside adding extra water circulation. Superfish surely makes your aquarium hobby successful, complete with aquariums, filters and filter media, heating, lighting, ventilation and useful accessories. It is our goal to make your aquarium hobby successful and also affordable. Click here to also browse a wide range of Superfish products we stock!