Yellow Tang Help!

[Johnny Reefer]

Originally Posted by Funky_Fish14

10 or so blue-leg hermits
5 or so Scarlet hermits
5 electric blue-leg hermits

May I make one more suggestion?
Whether it's related to your problems, or not, is hard to say, but...20 hermit crabs in a, what is it?, 75g?, seems like alot to me. IMHO.
Hermits eat algae. Yellow Tangs eat algae. The more hermits you have, the more competition the YT has (had), and the less algae there is (was) for it to have had access to eat.
I'd say, tone down the hermit crab population.
I have six in my 135g and I consider that enough.

JMO and cheers,