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Shepherd
2025-08-30 15:09:30
there's not much to say, they do the thing. These are a nice size for a small fountain/koi pond and and a decent air pump. I used these to aerate the corners of my pond that the waterfall doesn't churn up enough. Good amount of airflow through the stones means less work on your pump.
Jes
2025-08-18 11:36:57
Works great. Use with a strong air pump.
T & Y
2025-08-17 13:41:29
These came in today and went right to mypond. Put them in and immediately saw tons of bubbles and was more than happy. Not sure why some bad reviews but definitely well spent!
ugo
2025-08-14 11:31:27
There are a nice size and fuel heavy and well-made. But one thing I have to say is that the air bubbles are not coming from the whole stone. Only some the area close to where the air tube comes. Maybe he hasn’t been long enough and the air will start coming from in a few days. But it has yet it hasn’t.
Terry Tanner
2025-08-10 18:50:16
Works as it should. no problems.
Ed D.
2025-07-31 14:12:18
Stays where you put it.
Jeremy Y.
2025-07-19 21:26:43
The media could not be loaded.
Customer
2025-07-08 17:16:01
The media could not be loaded.
Beatnik
2025-06-29 12:18:09
I've tried the VIVOSUN, Pawfly, ActiveAir, and an assortment of smaller variations (I learned after a while to stick with the 'pop can' versions for DWC Hydroponics). The VIVOSUN stones seem to distribute the smallest, finest bubbles over the greatest area. I commonly use one stone per bucket, but I recently ordered more and added two per bucket. Growth has exploded. I didn't really expect it would make much of a difference and I just wanted to make use of an extra air pump I had, but the results are undeniable. So, in short, order a few extra and double down. At this price you can't go wrong.Noob note - never wash with soap and the put stone in reservoir. You will be giving your plants a bubble bath. Soak stones in ph water before use.
Sandra g.
2025-06-10 17:08:28
Adds lots of bubbles for the fish. They’ve been working great.
Heath
2025-05-29 18:28:17
3 of the 4 I bought worked beautifully; the fourth, I had to reseal - the air blew right out at the connection, instead of through the stone. Overall, these air stones are large, but not as effective as others I've had. I bought them to use in Koi pond moving bed bio-filters, and they will suit that purpose well.
Norm Courage
2025-04-28 09:23:37
I use this with my PondAir 2 and they produce a nice air column.
Jonathan
2025-02-04 10:17:39
Good price and fast shipping, but one of the airstone is leaking air where the plastic connector is located (its not the tube) but considering the price cant really complaint...Edit: Vivosun sent me a replacement and I also bought 2 more airstones, all of them had zero problem... i was just unlucky with the first one I bought. I will continue to buy Vivosun products
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