Rubber diffusers sometimes tear and have to be replaced. In spite of claims, they also may clog within 3 – 12 months. As a result, a worst problem than torn membranes occurs that is not seen. Rubber membranes have about 2,000 holes in them. The CLEAN-FLO diffuser has over a billion holes. The membranes begin to clog and swell as soon as they are put in the water. As they swell, the holes become larger. Now you have less bubbles coming out of larger holes, with water restoration or water management nothing like you expected or that Clean-Flo attains.