Review on ATPWONZ Aquarium Air Pump Accessories Set: Complete 13-Ft Airline Tubing Kit with Air Stones, Check Valves, Suction Cups, and Connectors by Heidi Monroe

The only thing I don't like is that the hose is too flexible which makes it extremely difficult to get the hose into the air pump, check valve and aerator to introduce Apart from that, it's worth the money. It creates powerful bubbles for the bettas, so you can hide it between plants when your bettas need it. One of the disabled bettas so I use it along with my sponge filter to oxygenate the water. When you're not using them, make sure you wrap the air stone in paper, just for protection in case you hit it on something.