Hello reefers , I've been battling valvet for 2 months now i took everyone out but can't catch my 4 chromis which seems to be bullet proof against it. I tried again after 2 weeks without fish and toss in a flame hawk, 2 days later he didn't make it. Are chromis not affected by valvet and what can i do? IT's a 90G mix reef tank with lots of rock work , kinda impossible to catch all of them. Thanks