Aquarium Tank CO2 Diffuser Bubble Counter Spiral Glass for Planted Tank with 2X Suction Cup CO2 Equipments

Don't buy this. First one arrived broken. Ordered again, and the second one arrived intact, but then I realized that the input/output would not fit my standard c02 or intake tubing. Its actually the same size, and even after I heated the tubing ends to stretch them, they would not fit.

I got a replacement becuse the first one arrived broken but the seller sent another one right away. It was very hard to install the tubbing, I heated the tubbing in hot water and inserted a pencil tip in the tubbing several times to make it wider but it did not work. I ended up going to my local pet shop wich sells high quality items and bought a softer tubbing. It was still very hard to install but it ended up working as intended. While in the local pet shop I saw another buble counter very similar to this one except over twice the price. I realized the dimensions were very similar to this one so I assume its a normal thing in this items to be hard to install, there fore I am happy with this purchase. The only reason I did not give it 5 stars was because instead of releasing one buble at a time, it releases 2 bubbles at the same time, one right after the other one, then one second later another set of 2 bubles and so on, I woiuld have preferred only buble at a time but still looks great and I like it. Just keep in mind its very very difficult to install the tubbing and its a fragile piece of glass so you have to be very patient, it took me a good couple of hours of heating and stretching that tubbing.

I can't honestly rate this product because I broke it trying to get the tubing on it. I wish the fittings were just a smidge smaller, so attaching the tubing wasn't such a dice roll.