I was wondering if anyone knows what this stuff is that I seem to have growing on my fliter. I have a Penguin 170 and where the water exits, there is some white "funk" building up. It looks like some type of bacteria or fungus. I really do not want to clean it off as I know that a good bacteria build-up is crucial. I am kind of new to this, so please help! Whats the funk and should I remove it?
Thanks in advance!
Thanks in advance!