I moved my 400 gph power head around the same time I added my flame angel. I moved it from an open area of the tank to above live rock. First I found a clown in the head, then this morning my new flame angel was in there. I don't have a screen or cover on it. Could a healthy fish be sucked into it? He was eating like a horse and swimming around fine. I am trying to determine if its just the powerhead or if my water is not right.
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