I had sps LPS and tons of other softies.. yet i couldnt keep zoos or chalices.. turns out it was my magnesium I never dosed or tested it because i thought i had enough from my salt (IO)... And i wasnt trying to kill bryopsis... well turns out mine was like 900 or something.. I raised it to 1400/1500 over 2 weeks...and my chalice almost exploded. colored up so fast i was shocked.!