Review on Enhance Aquarium Air Flow with Pawfly 10 PCS 🐠 Clear Plastic One Way Non-Return Check Valve for Fish Tank by Andrea Walters

I like to buy air stones, check valves, suction cups, etc. in bulk because experience has taught me that a significant amount will not usually work because they are cheap and of poor quality. Pawfly shook that belief because every item I've ever received from them has worked and worked well for a long time. Every check valve I've received works and I'm still using the first one over a year later! 100% track record is amazing for anyone, especially for bulk purchases at bargain prices. + with a gold star, Fly! Well done, you've gained a regular customer!