Is it just clowns you are having trouble with?

which one? ocellaris or percula

Just the clowns yes, and my one Ocellaris lived for sometime before a tank fault acutally made me have to restart. But with perculas never had luck.. couldnt tell you why. Treat them the same as all my other fish.. have had problems, where as most people I know, dont have issues with them at all and they are typically the fattest happiest fish in the tank. So my experiance may be isolated.. But im happy to report the two that I have now are well established and sexed.. one male and one female. Oddly since purchase, never noticed till later, my female has a flappy gill and is still doing fantastic.