Awesome Aquatic Aluminum CO2 Atomizer Bubble Diffuser Reactor Injector for Planted Aquariums Tanks Quality Aluminum Sturdy Ceramic Diffuser

Initially it looked like there were leaks around the edges even when tight and the bubbles were big. But after soaking in the water for 1-2 days, there were no more leaks and produces tiny bubbles. I am using this with a DIY CO2 generator (soda bottles, citric acid, baking soda etc) so seems to work fine with 1-2 kg/cm^2 pressure. I am guessing the disk will eventually clog. It is removable and replaceable, I will try removing and cleaning when that happens.

Works very well, I really love the aluminum c02 defuser however I with it was easier to order the different colors in the picture. Luckily I wanted the blue one to begin with, I wasn't ever concerned with bending or breaking this. It's roughly 3 inch's tall and the ceramic disk is less then an inch.

Excellent

Does what it is supposed to do