Hygger Aquarium Air Stone, Fish Tank Bubbler, Nano Furnace Flue Round Stone Disk, Small Bubbles and High Dissolved Oxygen, with 2 Suction Cups, 1 Adjust Valve, 1 Check Valve (Black, 2 Inch)

Perfect for my black walled aquarium, added black tubing to the air stone, and set up was easy.

The media could not be loaded.  First, I wish I had been more patient in placing my order because I didn't realize there was no pump or tubing. So, I did some more shopping and purchased ALL of the products I needed.It took me about 10 minutes to set it up and the fish love it! I really can't tell a difference between the sizes of the bubbles when I turn the valve, but it's okay. I definitely should've gotten one of these sooner!

Provides very good air bubble flow across the 55 gallon freshwater aquarium -best for community tank— discus rummy nose rams shrimps clamps plants-submerged and immersed .They are all thriving well; No added CO2 . I am glad for this great purchase!

I primarily use this in a 5 gallon tank with African cichlid fry to get a little more air flow for them to stay healthy. I have it hooked up to a large air pump, but I'm running several other things from it including an adjustable valve to control air flow. You don't need a very powerful pump at all to get the desired effect from this air stone.It produces a large amount of small bubbles for a solid couple of weeks, then as it gets filled with minerals from the harder water and algae it diminishes slightly. After a few weeks it still works better than any other air stones, the bubbles are just slightly larger.A 30 minute soak in very light vinegar or peroxide and water with a quick scrub and it's back to its original state.The suction cups it came with are cheap and failed pretty quickly, but I didn't buy it for its suction cups. Not a deal breaker at all.Highly recommended for fry OR to help airate excess ammonia from a tank. Sometimes I switch it to the back compartment of my 15 gallon to aid with this and it clears up the ammonia in a day.

Just set this up today and I really enjoy the Nano bubbles, the bubbles from the 2inch black disc I purchased are much smaller than a regular aquarium air stone. Some of the bubbles come out big, but many are Nano. I soaked my disc for 3 days - (Because I have been extremely busy, finally got to get to installing it).~ I ordered the 2inch black disc, I hope in the future, for this product, the stone disc will also be black.At first I had this new air stone hooked up without the control valve to a 1.7 watt air pump and it was too powerful of flow for my 11inch deep aquarium. (I added a picture of how I installed the control valve). If you are not going to split the flow from your pump to another air stone, you will want to create a sort of air drain off if you want a lighter flow of air bubbles. If you just hook up the control valve to one air pump, make a way for the pressure of air to escape, for the longevity of your air pumps. (You don't want to cause air back flow to your air pump - it will make your air pump have to work harder). I added a cotton to the opposite end of the control valve to soften any hissing noise from the air release - I cannot hear any air hissing with the cotton attached. (See picture)I hope this product will work for a long time. I am going to purchase a second air stone for when this one gets dirty to switch it out.Note; air drain set-up should be behind the water check valve.Fun aqua product, I recommend for purchase.