Fish R Fun Aquarium Fish Tank Heater 50w Aquarium Internal Filters It is an effective sludge

It is an effective sludge vacuum with a powerful 1400w motor housed in a compact design

and the Bottom Output setting is for deepwater agitation

The unit is compact and has a see through food dispenser (approx 90ml) so you can see when it needs refilling

Central weir with twin overflow (Standard downpipe plus emergency overflow)

Fish R Fun Aquarium Fish Tank Heater 50w Aquarium Internal Filters It is an effective sludgeFish R Fun Aquarium Fish Tank Heater 50w Keep your fishy friends happy and healthy with the Fish R Fun aquarium heater. This fully submersible heater features a scale that allows you to carefully adjust the temperature of your tank and includes suction cup attachments to keep it fixed to the side of your tank. The high quality element in this heater will ensure that you can keep your fish at the perfect temperature consistently. Suitable for aquariums