4 Inch Air Stone Bar Bubble Diffuser for Fish Tank Aquarium, 6-Pack

Great product for the price

Using in my hydroponic lettuce garden. They work well and provide a notable benefit.

They light weight so they are not sinking to bottom pond. There are came out big bubbles

picture is not very accurate.. they are EXTREEMLY SMALL, stone surface is literally just under 1/2 inch and literally only 4 inches long.. cheap though.. other than that, its a air stone.

I used one for a baitbucket for minnows . Kept my minnows alive all day. Puts out a lot of bubbles all along the stone. The others i used in my aquarium and the same there puts out a bunch of bubbles. I got worried after 2 weeks i started seeing less bubbles and though the stone was plugged up. turned out my air hose was kinked. After i straighten out the hose it started working like new.

I'm using these stones to aerate small hydroponic lettuce systems. I dedicate one stone per each Tetra Whisper 10 air pump, which is their smallest pump. With these minimal pumps the Waycreat 4" stones generate enough aeration for 6 mature lettuce plants. My systems are more or less a DIY version of the Aerogarden Harvest model. The small Whisper 10 paired with this stone is working very well in my setup. The price for these stones is good and shipping was fast.I suggest looking for an inexpensive suction cup designed to anchor the air hose to help keep the stone facing upright. The stones don't float up but they are fairly light weight and can move around if not anchored. You can find suction cups that clip to the hose close to where it connects to the stone. This will keep the stone facing up and anchored.

Compare to the standard green / blue airstones, these are fantastic. I use these for my in-tank turf scrubber, and they are perfect.I would frequently break the generic airstones, but after using them for many months, I have yet to break one of these, probably due to three sides being covered with plastic. Also, they still distribute the air evenly across the length of the stone, instead of getting clogged and only bubbling from one end or the other. The bubbles are also much smaller than those generic stones.Add that to the extremely affordable price, and I am very satisfied.

Tons of bubbles, either at low pressure or high pressure, but it gives really nice tiny bubbles at higher pressure.