Those with experience having in-line refugium, please offer your thoughts. I have a refugium with miracle mud base plus few inches sand bed on top of that. Been running for three years. Content mainly consists of cheato macro algae,small pods, and quite a few of bristle worms... I've seen a you tube video of a cleanup crew farmer saying, small bristle worms of the kind in my refugium are good, just not a certain large type worm (forgot the name, 8+ inches long ... That's great. So, ...