In the big scheme of things, anenomes are realitvely hardy. If they are dying you are doing something wrong. Are they dying a slow death? Do they thrive for a week and then slowly get smaller and smaller and keep moving around? If so, they are missing something. You should use an Iodine additive to the water. Also, check your salinity. Specific gravity at 1.023 is good. Any lower and you'll have problems. ALso check water quality. Poor water quality will not be tolerated. Are you feeding your anenomes? They need food. A liquid food and a feeder tube will work. Good luck.