So recently I starting putting my tank together I want the lit bubbles they look really great when the lights go out! I got a kit well actually 2 of them, to put into my tank a splitter valve to adjust the different flows to the air stones. Well over the course of about 2 months I could not get the look even similar no matter what I was getting more bubbles out of one, but next to none out of the other, or vise versa. I tried cleaning them adjusting my tubing etc nothing was working. I bought a $10 kit with an extra-long blue air wall air stone it looks great. I am going to purchase it again and do it again, but I discovered the cheap air stones work better than some of the more expensive ones....just a warning to everyone out there!