This Top Fin Silent Stream Power Filter PF 20 is the perfect addition to any aquarium. With a flow rate of 120, it is capable of filtering out all the debris and excess food that your fish produce. It is designed for internal use and is compatible with tanks up to 20 gallons in capacity. The filter is made by Top Fin, a trusted brand in the aquarium industry. The PF20 model is a power filter that is ideal for fresh water aquariums. It is easy to install and maintain, making it a great choice for beginners. The filter is sold without any custom bundle, making it a versatile option for any aquarium setup.