I am talking about the ceramic beads. I have some early Ehiem balls that some are slightly crumbly I am guessing they need replaced. Does this stuff ever clog there fore needing to be replaced?
crystalview;34041 said:I am not sure what these large pea like balls are made of some sort of ceramic. I the like I will replace the. I like the ones with the whole in them also. Wonder if there has been any write up on the differences with shapes and material.