Not running any myself, but from what I've heard and read I would agree. Hopefully some one with experience will chime inlooks like the bacteria snot i keep hearing about. I haven't got my pellet reactor going yet - missing a connection between my pump and the hose. doh.
i have the same setup running for about 6 months or more have the same snotty looking stuff in the sponge not having any problems at all i would say nothing to worry about
looks like the bacteria snot i keep hearing about..
He is using the screens....I don't see any sponges in his pic.