The BioCompact 50 internal filter filters water in small aquariums with a maximum volume of 50 litres very effectively. This is ensured by the large filter surface and the activated carbon included in the scope of delivery. Thanks to the individually fillable chamber, this can also be exchanged for other filter media. The water flow rate is 120-240 l/h and can be individually regulated on the water diffuser. The filter works very quietly and is very energy-efficient with a maximum power consumption of 5 watts. Thanks to its flat shape (120 × 85 × 47 mm), it can even be installed horizontally in paludariums. The internal filter is supplied as a complete set with a 1.5 m long power cable.