Pawfly 4Pcs Air Stone Bar 4 Inch Bubble Release Mineral Airstones for Fish Tank Aquarium Hydroponics Pump Green/Blue

These bubblers are perfect for my tank and size. They aren’t to big. Came quick and fast.

The bubbles are uneven. One of the four bars didn't work. That being said, most of these bubble bars are uneven. Even more expensive ones. If you want something perfect, maybe an expert at an aquarium store has the answer

I am using these to create sort of a bubble wall in my small 3 gallon and 5 gallon tanks. With a pressure regulator on the air hose, they work beautifully!I also just realized a side benefit of these: if placed right under the intake of my HOB filters, they keep the duckweed away from the filter, thus protecting the filter from getting clogged with duckweed constantly!

I am using this with a 2 watt air pump which has plenty of power to get a nice output of bubbles along the whole length. We all love it - (fish, shrimp, me). I have not noticed any excessive noise. Would definitely get again.

The media could not be loaded.  These are so much fun. Wish I could post multiple videos. I can't capture still shots very well. So far I have 3 in use out of the 4 in the package. The 1st shown is under the bridge. It is larger than the bride so it is angled with low air pressure showing a few single bubbles it gives off in the ground in front of it and then an explosion of bubbles every few seconds from the actual bridge. The 2nd is under Poseidon. His base is wider than the wand and he sits on a rock so I angled him to get the effects I wanted. It even looks like I have more air wands running than I do. The 3rd is in my shrimp tank lol. The bubbles keep my mermaid sassy floating amist their spray singing her seiren song luring the little shrimp for her entertainment and mine.I'm very happy with them and I'm sure I'll be ordering more in the near future. I've been into aquariums for 30+ years. These seem well made and durable. I have bought more expensive junk in the past to try and do what I could easily accomplish with these. And bonus at an affordable price. You have nothing to lose and everything to gain.So as far as giftable... if your friend is into aquariums or your a secret Santa and you know their into fish... your gonna be a hero. My shrimp tank is a 10 gal and the other 2 are in a 175 gal so there really isn't a tank size limit for these. The only limit is your imagination