Hi Christy.. a few questions... are they melting? are the parts of skirts missing.. any polyps half eatten? are they sliming over?
Sometimes when a colony is taken from the wild, the poor water quality stress kills the zoos...
Bacteria
Predators
Water quality
Irritation.
A cure all solution would be..
Cut off all melting zoos
freshwater and iodine dip the zoos.
use a powerhead to blow off slime and detritus.
Check for the brown zoo eating nudibranch crabs or snails... Remove with tweezer.
Do not place on sandbed b/c of spaghetti worm irritation.
Check around zoanthid placement area for possible irritants... ie:// other corals.. feather dusters, spit worm thingies
Place in high flow area until opened up and happy again.
In the spirit of Bev..a link.
http://www.zoaid.com/index.php?modul...&g2_itemId=384
HTH.