This m380 internal fish tank filter works silently but is also powerful. It has a power of 7 watt and can be used for aquariums from 40 to a maximum capacity of 60 l. The filtering of the water and the supplying with oxygen can be done at the same time. The water will be cleaned by 2 phases, the first phase is biological, where the water will be cleaned by a sponge, the second phase works chemically, where the water runs through a special acitve carbon. The filter also includes different outlets. The cleaning of the filter body can be done easily because the components can be disassembled, cleaned and assembled again easily. Great for small turtle tanks