Reddit reviews UPETTOOLS Aquarium Biochemical Sponge Filter, Ultra Quite Aquarium Air Pump Double Head Bio Sponge Fish Tank Foam Filter

【Multi-filtration Functions】Upettools sponge filter combines single scientific 7-layer ribbing shape sponge design, which can quickly established a bio-filter, improve purifying water quality, and the oxygen port can rotate 360 degrees without dead ends, keep your fish tank crystal clear and clean.【Special Ceramic Bio Filter Media】Upettools aquarium sponge filters compatible with one container with ceramic bio filter media inside, which help to remove harmful substance and increase oxygen level in your tank, you can replace the filter media to enhance water quality.【Removable Sponges 】 You can take down the sponge from the filter easily to clean or replace it. Sponge filters provide both mechanical and biological filtration, traps floating debris and protect your baby fish from being sucked up into the filter.【Easy to Set Up】Simply install an airline into the unit and turn on the air pump, great way to clean and oxygenate your tanks. Don't use tap water to clean it, simply squeeze the sponges in tank water.【Max Suit for 55GAL Fish Tank】Compatible with 2 suction cups, can be installed anywhere and can be easily hidden on the back wall of the aquarium. Suitable for freshwater & saltwater and all kinds of ornamental fish breeding, breeding and fish formation, especially for colorful fairy, small fish,shrimp tank, betta tank etc.