Review on Feelers Cylinder Diffuser Aquarium Hydroponic Fish & Aquatic Pets by Wendy Hernandez

I have never seen an aquarium airline with fittings this size on these diffusers. I probably should have read the size more carefully. I was able to find an air pump hose to try them on and it wasn't great. The bubbles that came out were large and few in number. Not small and tiny like other air stones I've used. I have larger ones in my pond from another manufacturer that have a standard size connector and produce a sea of tiny air bubbles to properly aerate the water.