Review on 🐠 2-Pack PAGOW 7 Inch Aquarium Bubble Wall Air Stone Bar by Kristen Green

I like their work but the suction cups WILL NOT hold. And since they are NOT A STONE, they just float to the surface after a few hours. after installation. I first tried them in my tank (jar) and at first they looked and worked great, but as I said the suction cups failed and the bubblers swam. Then I installed them into my DWC hydraulic system using various types of suction cups. They swam again. Don't get me wrong, they create an impressive amount of bubbles, but they just can't be held in place with the resources provided. I ended up leaving them in my DWC system for ventilation, but I had to find some tricky things. to keep them in place. I love what they do, but there has to be a REAL and SAFE way to keep them in place. I do not recommend purchasing until this is resolved. If the manufacturer can fix that, I'll definitely change my rating.