Key Features Hang on mounting, saves space in your aquarium. Dual action biological filteration for healthy clear water. Integrated skimmer for water surface cleaning. Easy to install and replace filter cartridges. Waterfall outlet for water oxygenation. The SuperFish Hang On Filter 100 is an external hanging filter that is suitable for cold water and tropical aquariums. The hang-on design allows you to save space inside your aquarium without sacrificing filtration quality. The filter not only removes dirt from the bottom of the tank, but also clears surface dirt using the filter skimmer. The waterfall outlet helps to keep the water oxygenated whilst adding an attractive feature to the aquarium. Activated carbon foams and micro filter pads work together to create a dual-action filtration system that keeps your water clear & healthy. As a result of the activated carbon, your aquarium water’s pH balance stays neutral, and prevents colour & toxins from accumulating in it. A simple to