Key Features Compact External Filters Intergrated 100 Watt Heatup heater- helping to streamline the look of the equipment in the aquarium. Complete set up-includes media, hose, adaptor, flow intake and outflow tubes and water diffuser Automated shut off to prevent water loss when cleaning For tanks up to 100 Litres FiltoSmart Thermo External Aquarium Filters, new systems direct from Oase. The FiltoSmart Thermo External Aquarium Filters are small and compact filters designed for the smaller to medium sized tanks while creating essential space saving solutions. They help to create crystal clear and healthy water through multi-stage mechanical and biological filtration along with a large filter surface area in a small compact filter unit. Working hard to keep the water clean and healthy for the life inside by using the large surface area and multi-stage filtration system, The 100 FiltoSmart has a selection of benefits in a compact designed filter case. Each filter is fitted with an