Ziss Adjustable Air Stone

I bought this air stone a couple months ago but decided not to use it since I bought an AC sponge filter. I read that it wasn't needed since the filter has an air stone. I bought a another tank with a HOB filter, so decided to try out the Ziss. Very disappointed. It's NOT weighted, and after a couple minutes it stopped bubbling altogether. Will not buy another.

I bought this out of curiosity. I like the idea of an adjustable airstone, plus I liked that it was weighted. But last week it came in handy, it made the perfect replacement for a tiny sponge filter that needed a better airstone. The cheap blue pumice airstones I already had were too wide to fit... It really saved the day!

Works well. Like that I can change the filter in the middle great for new fry tanks. Great quality.

Work great

Although they require a weight or held down by something in the tank, the flow of air creates plumes of bubbles. I also use it inside the sponge filter. And when the pads become clogged, they are easy to quickly change.

work great, best I have used in 55 years keeping fish aquariums. very easy on air pumps.

I had 2 for years, and now I have 4 going. I’ll never use the cheap air stones again.

Ever since I installed this airstone with one of my sponge filters from aquarium co-op, I no longer hear the loud popping sounds from large air bubbles as before. Easy to clean and easy to adjust the desired bubble size. A must buy !!.

I find this so easy to adjust the airflow right from the stone itself. Easy to clean if need be, but I doubt it will get clogged.
Definitely need a few more

When I heard Cory hyping these up I was honestly a little dubious. I didn't realize how much of a difference a better air stone can be! This makes far finer bubbles with less noise than any of my previous ceramic stones, and is easier to keep at the bottom of the tank. I doubt I will be using anything else going forwards.