I have 4 clowns, 1 star and stripe puffer, 1 pearl puffer, 1 foxface, 2 mandarin goby, 1 hawkfish flame, 3-4 damsels..
I don't know what happened but one of my clown fish disappeared I have 3 left

i just noticed it. I searched everywhere for the fish i thought a rock fell or something. didn't find it. I have never seen my puffer chase after them...so mysterious...something may not be compatible.
=( need help
My overflow is a overflow box using siphon, i don't think he's there. checked the sump too.