Review on 🐠 Pawfly 4 Inch Air Stone Disc Bubbler: Enhance Oxygenation in Your Aquarium with this Fish Tank Air Pump Accessory by Sara Lutz

Not impressed. They don't stick to the bottom of Rez, causing him to hit the root ball. If they stay safe somehow, all your nuts and dirt will get under them and all over that black plastic. I usually only use big 4x2 airstones but wanted to try these as they cost at least 3x what should be double the price. also good? nope! I ended up removing everything to go back to regular Airstones. as they work much better and cost half as much. If you want to try them, you can take mine!