Matala Hakko Non-Weighted Air Diffuser Tube 1.6" x 23.6"

Matala Hakko Air Tube Diffusers are designed to be a drop-in system. The rubber membrane is wrapped around a hollow PVC tube. The air holes are a little larger than other brands, so you get medium-sized bubbles which do not clog and put very little back-pressure on your system. This means very low maintenance and effective aeration system. 

• Can be filled with rocks or gravel in order to be weighted down.