4 Pieces 4 Inch Air Stone Disc Bubbler Diffuser with 12 Pieces Suction Cups for Aquarium Hydroponics Fish Tank Air Pump Round Aquarium Air Stone Kit

Excelente producto, era lo que esperaba.

These worked great. I’d definitely buy them again and recommend them for DWC. Please make sure you soak them in water before throwing them into service. This is necessary for them to create smaller, finer bubbles in the water. The suction cups are a huge plus to help them to stop floating up in the water the air making them more buoyant.Also, just a side note about cleaning them. Don’t wash them in any heavy bleach/water cleaning mix. The air diffuser material basically melts and crumbles to pieces.

Bought these for my deep-water culture (hydroponics). They work well in my system and are a good price.I have bought two different brands of air stones. I don't see much difference between the brands, so the price has been the differentiating feature.I would buy this product again.

The bubblers I’ve ever used for hydroponics

They do the job. Not exactly what I needed for that time but the held up for the time being. The suction cups are a little iffy.

I’m so glad I could get them

Every one of the airstones were broken. The tips were broken off and that’s where the hose would connect. The box was also completely smashed. I’m not sure who is packing these products, but they ought to be ashamed sending junk out to customers.

One gripe. The suction cups warp and don't always stick to the bottom of my bucket. Other than that, it's cool. Great value.