FILTER AND HEATER: The combined internal corner filter and adjustable HeatUp heater in one compact unit gives you access to two functions without cluttering your tank. THOROUGH FILTRATION: The high-volume filter foams provide biological and mechanical filtration, with the option for fine filter fleece or carbon for third-stage chemical filtration. ADJUSTABLE DIFFUSER: The integrated, adjustable diffuser nozzles direct water flow evenly across the water surface, breaking surface tension and ensuring thorough oxygenation. SIMPLE MAINTENANCE: The internal fish tank filter's EasyClean mechanism allows it to be removed independently while keeping the pump in place, saving time and minimising stress for your fish. QUIET OPERATION: The quiet, low-energy operation minimises running costs and disturbance, ideal for any environment.