200mm (8") Plate Airstone for Koi Ponds, Aeration for Aquariums, Air Stone for Larger Pump Bubble Diffuser for Outdoor Pond Garden Circulation System, Aquatic, Hydroponic, Fish Tank

It works very well for the price !

I have this in my pond filter and it’s great at turning the media over

Was surprised how many air bubbles this created. I think it is better than the small balls

Replaced with same product it's lasted me 6 yrs in a 10 mtr long 5mtr wide 1 mtr deep pond.

a very large pond to keep fish and pond healthy

I bought this item because it had a large surface area and did have some positive reviews. Although one of the most expensive I mistakenly thought I'd be getting a quality product, how wrong I was! Alarm bells rung when I noticed there wasn't any named manufacturer or address on the box just broken English nonsensical jibberish. The fitting is for 8mm pipe which, as you can see from the picture, is not as advertised which has a 4mm and 8mm fitting. Leaving it to soak for a. Outlet hours did nothing to achieve a consistent and even flow it simply leaked air, in large gulps, from around the perimeter. Absolutely useless.

I'm sure this might work great but I haven't been able to use correctly. My pumps aren't powerful enough. You need an extremely powerful expensive air pump around £300 mark!Better off buying a few smaller stones that will do the same job

Come on time as described by seller thank you very much