Lol....im talking about the rubber connectors. There is so much build up on them that they look white. They are supposed to be black.Sorry I was talking about the rubber connectors in your pic. Your output nozzle looks like it’s brand new compared to some of the ones I’ve cleaned!
It looks very dirty to me. I often change my bio sponge ever 2 months. It looks like it need replacing. If you don't think it needs replacing then just soak it is hot water for 15 mins and that should do the trick!To clean or not to clean? What do you think?