Hydrofarm Active Aqua AS6 Air Stone, 6", Set of 12

DO NOT BUY! Terrible Quality. Six of my set of 12 have fallen apart in the first couple weeks of use, seems that when they're put in water, they lose their structure. Strongly suggest not buying this product, and buying a higher quality product instead. The worst part wasn't wasting my money, it was coming home to find the sixth one broke and the air hose had come out of the water, and I'd lost about half the live stock in the day without air. What an expensive attempt to save money.

Save your money. Too many different issues to list. Almost 1/2 broke upon arrival all but few broke within a couple of days use.

These air stones are decent. Not great, not terrible. They don't seem to be constructed really well which concerned me initially but ended working okay. A few of the stones get more air toward the back of the stone (where the air comes in) and almost none toward the end. The ones that get even air distribution work great. I guess its a good deal for the price.

These are pretty good. In acidic hydroponic water they will degrade after six months or so. Once that happens, they become brittle and break easily. Yet, they are fairly cheap.

7 out of 12 cracked or completely broken.That's probably more to do with handling, than the manufacturing.

I bought 12 of these and they brake very easy and so far three of them have not worked. I guess u get what u pay for.

Came as expected. Thank you!

6 air stones will not work. You were charging only 15 $16 for 12 stones and now I got to pay $22 and 6 were bad. Hope it doesn't happen again cuz I really need them.

Ordered to three times. First time half were broken. Second time only one in the box same the third time. For the amount of time I've spent ducking around I've saved nothing and should have just gone to the store and paid $3.50 instead.

these stones did not work......out of 12 stones, only 3 had bubbles, after two weeks in water they fell apart, crumbled...big mess...will never buy again.....don't waste your money.....

Very bad quality. I thought Active Aqua was selling quality products. The stones break easily (I broke 2 of them just out of the package), it is too porous (too big bubbles) and must be rinsed before use. Not worth the price.

Ordered a 12-pack. Only 8 came in the package. 5 of the 8 leaked at the connector.I don't recommend.

Half of them arrived broken.