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VIVOSUN Air Stone 2PCS 4 X 2 Inch Large Air Stone Cylinder for Aquarium and Hydroponics Air Pump (2PCS 4 x 2 Inch) Review: Good for deepish pond - Using these on my pond thats 4ft deep and they're perfect. Review: Quality Assurance - 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.















| ASIN | B01MV5C1I4 |
| Best Sellers Rank | #111,907 in Pet Supplies ( See Top 100 in Pet Supplies ) #825 in Air Pump Accessories |
| Brand | VIVOSUN |
| Brand Name | VIVOSUN |
| Customer Reviews | 4.5 out of 5 stars 2,912 Reviews |
| Manufacturer | VIVOSUN |
| Manufacturer Part Number | 4320792897 |
| Model Number | 4320792897 |
| Pet Type | Fish |
| UPC | 714119465697 |
N**S
Good for deepish pond
Using these on my pond thats 4ft deep and they're perfect.
H**H
Quality Assurance
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.
U**O
The air only comes from one area
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.
N**Ö
Air stone
Works great
J**N
Left a little underwhelmed
Expected a little more from these considering the size (I bought the combo recommended pump and everything ) No huge deal as I have one of these in the bottom of my hydroponic setup and a smaller more bubbly stone suspended closer to the root zone of plants.
Trustpilot
3 weeks ago
1 month ago