2-Pack 4 Inch Aquarium Air Stone, Air Stones Disc, for Hydroponics, Fish Tank, Air Pump

I use this product in five gallon DWC hydroponic buckets to grow tomatoes. They pit out a consistent amount of very small bubbles. My tomato plant is responding better with this aerator than with others I have used.

The media could not be loaded.  It puts out a alot more air than I thought it would. I zip tied it to a big rock so it would stay exactly where I want it to so I skipped the suction feet. It won't work in 4ft deep water but I'm thinking I need a more powerful air compressor.

These are nice, but mine came broken. 1 of the suction cups was broke off. I just used gravel to weigh it down.

Well made, well packed for shipping and stays in place.

Bought two packs of two 4 inch discs. 3 of them leak so the stem where it connects to the base so nothing comes from the actual stone. The 4th one just does large bubbles just on the other side of the inlet. Complete waste of money. Don't risk it based on the good reviews like I did. You'll regret it.

Suction cups always seem to come off or just get very weak over time quickly also I've bought a lot of these and the consistency was not there at all.. I've had plenty that had air leaks around the seals preventing the bubbles from coming out of the disc properly.

Work great

Air stones were of decent size and produced perfect bubbles for aquaponics tank. Using 1 on each side of tank created perfect circulation.

Excelente producto. Funciona sin problemas y un poco mas grande de lo que imagine, pero perfecto para pecera de 70gal

I ordered the twin pack the overall quality of the product is really good but unfortunately one of them was defective one of the outlet valves was broken on thankfully Amazon resolved it for me I would recommend this product but check on receipt of delivery

1 of the 2 arrived with a broken valve so was refunded. The one that works is great