has anyone kept them for really long? i seem to have really bad luck with them. bought two, two die. but my other corals (hammer, torch, bubble etc) all doing fine, and well too.
i don't understand why they just die off in my tank. the latest one i got started to shed off the brownish slime on its skeleton then now its a white skeleton with the green mass in the centre. the polyps are also slowly withering away
my water readings are okay, tested this morning,
nitrate: 20.0ppm
nitrite 0.0ppm
alkalinity (kh): 9dkh
pH: 8.4
ammonia: 0.00ppm
sg: 1.024
ca: ~480
mg: ~1450