EcoPlus Piedra de aire redonda, grande, gris

I use this bubbler stone for creating garden compost tea. Works great! No complaints.

Very large stones amazing for dwc grows or for a large fish tank they produce a lot of bubbles and keep the water well oxygenated be sure to wash them off very well though as with any fish equipment highly reccomended

Edit: It's been a year and it still puts out the same enormous amount of bubbles. Very Highly Recommended.Original Review: My favorite bubble stone so far. It puts out a huge amount of bubbles and my Oscars love swimming through the bubble stream. It must feel good. It's been bubbling steadily for a couple of months now and I haven't noticed a decrease in the amount of bubbles like I did with my previous stones and wands, so I'm pretty pleased. It's kind of hard to hide in the tank since it is so large (about the diameter of a RedBull can), but that's about the only downside. It doesn't float, and it's heavy enough that my Oscars haven't been able to moved it around like smaller stones. I'll buy another one if this one ever quits on me. Highly recommended.

I bought 2 air stones for my hydroponic system and this does an amazing job of getting oxygen into the water. We've had this on non-stop for over a month now and no issues and no degradation. It's inexpensive and gets the job done. It fit my air pump perfectly. I highly recommend and when I need more I'm going to buy this exact one again.

As I write this review on a product I received 3 days ago and again today (purchased a 2nd one), I see that it suddenly went up in price by about 30%. I don't approve, so I subtracted a star. It's a great product at a decent price. With respect to some reviewers having a fit because they think it leaks around the top, um, no... it doesn't. Two things. First is the ol' path of least resistance deal, which is where the airline enters, so if you have an underpowered pump, it's going to just trickle out there. From playing with this product and various pumps, I'd recommend at least a 2W pump to drive it properly (I mean, really, it's the size of a V8 can-- give it some love). Secondly, the flow of bubbles becomes more uniform as the stone sits and saturates with water. After about half an …

The dimensions stated don't prepare you for how large these stones are. While I don't have the exact measurements - I had one standing on a table near a 12 oz soda can and the stone is almost as big as the can. I ordered 3 and all 3 worked perfectly. Great for DWC.

Out of 3 stones that I bought, one bubbles only around the fitting. The other two bubble from the full stone. It seems like some kind of sealer got on the stone that doesn't work. The ones that work are great, strong bubblers (is that a word?) and really aerate the water. Made my Koi happy. Used these to replace the small stones that came with my PondAir 4 Air Stone System, which I highly recommend.

The air stone I received did not look like the one in the picture. Instead, it looked almost exactly like this:Hydrofarm ASCL Large Active Aqua Air Stone Cylinder, which I ordered for comparison. The only difference was that the sealant used to secure the fitting was more like cement rather than rubber sealant. The other product is also a dollar cheaper. However, because they are so similar they probably will be similarly good.Update: Be sure to have a powerful pump to use this air-stone to full effect. Something rated for up to 20 gallons is too little; bubbles will only come out of the top where the fitting enters the stone. Added a star because it works fine with a 7.8L/min pump.