For a frag system is a baffle really necessary? Other then looks in main display do bubbles harm the system or cause any issues I am not aware of? Thanks Craig
the biggest issues I know of are A) bubbles getting in sponges and killing them assuming u keep sponges and B) your fish swallowing the bubbles which could damage their swim bladder and lead to death. I am not aware of anything, but I have notices with the water current required for reef systems it takes a lot longer for bubbles to successfully escape the water meaning they accumulate to quite an abundance quickly.
there are bubbles in the reef crest and tidal zones