VIVOSUN 2PCS 4 x 2 in Large Air Stone for Aquarium, Air Pump

Works good in 30 feet round pool. Using to grow some fish

I am using this air stone in my pond, and wow is it big! This disk took the place to two smaller stones and is a wonderful bubble factory, turning the water over and over. I notice that some of my pond fish swim through the bubbles. It must feel good to them. It's been in the pond for over a month now and it doing great keeping the pond well aerated, which is exactly what I wanted. Nice quality and base.

They are great bubblers; perfect size for my 6ft tank. Very durable and quiet... But you can find these significantly more affordable in your local pet store.

These are tough airstones. I am amazed that they still work at all after the beating they took in shipping. Bashed so hard, they were knocked free of the factory cardboard packaging. Some chips were knocked loose. Amazon put these heavy, brittle stones in an oversized, non-padded plain manila envelope. That's no way to treat airstones. Isn't Amazon supposed to be in the shipping business? Fail.

works great

Alot of bubbles

Used many airstones for my reservoirs this one is amazing the bubbles are so fine plants have more then enough oxygen in the water 10/10 make sure to soak stone for 1 hour to get the best oxygenation before using

As soon as I started using the product, it was immediately not fully functional. Only half of it was producing bubbles. Fast-forward to a week later, the bubbles are no longer working in that same spot, and now only about 10% of the entire disk is producing bubbles. I did try cleaning it as suggested, and that didn't make a difference either. It seems that others have had similar issues with this product, so I partially blame myself for not paying closer attention to the reviews. Had this unit actually worked properly, I likely would've given it a five star review.

like it

this is a great item, i have no serious complaints. works gives bubbles and if you have a sufficiently powerful pump it will give great coverage (at least in a 12" bucket). I am a pretty big fan of VIVOSUN so i was expecting the usual good but not super great build quality that does the job at a reasonable price. You could find slightly cheaper, but I've had such good experiences with VIVOSUN support that id suggest the 2-3 extra bucks is worth the knowledge that you have people that seem to genuinely want to keep you as a customer. Update just great my pepper plant is loving life.

Works good with the proper pump, I have a tetra whisper for 20-40 gallon tank and the air stone Bubbles great….only thing I didn’t like was it started to float a little of the bottom out of place

working well

What a junk. It is releasing big bubbles. Lookss like it is broken somewhere inside and escaping air. Lost money on a rocket science description! Stay away from it and keep your money in your pocket! In the background you can see a small one doing the job just fine. It is either defective or just pure crap quality!