Not me! I kill acros and zoa's alike! Montis, Alves, Favia, and Gonis do good. Acros and zoa's not so much. Acans do OK, and Blastos do good. GSP won't spread, cloves grow slow, and mushrooms shroom like a beast!I’d love to have a gmk but I don’t always have the best of luck with zoas. I swear I do fine with the harder corals, but I kill the easy ones. Although from what I understand from reading is that gmk have a bad habit of melting.