Review on Uxcell Hydroponic Bubble Release Diffuser by Dandy Sulley

This worked about as I expected based on the reviews. I had to dig it into the gravel on the sides to hold it up. My problem with all of these (not just this one) is that they create uneven bubbles and my OCD is overwhelming. As you can see in my drawing, there are large bubbles on the far left end, tiny bubbles in the middle, and no bubbles on the right end. But overall it's what I expected. I have yet to find a bladder stone that would be perfect. I tried it with and without the check valve, in both cases it was the same. I have a pretty powerful pump. That's 40 liters and I have a 30 liter tank.