as of 2 days ago, my zoa randomly closed. i have it next to another colony of zoas who are doing just fine. there have not been any changes to the tank itself. 2 days ago, the zoas were open, and they started closing through the day, and since then, the most they have done, is partially opened, as you will see in the picture. this was a purchase about 2 weeks ago from a reputable coral store here. the frag i bought was the purchase of 2 larger polyps, and a smaller one. in the store, and at home, i have only had seen the 2 larger ones open. the third smaller one has never opened, so no issue there really. when i took the coral out of the tank to check for things that might be hitchhiking, i noticed what may be a newer polyp, but it has never opened either, and to be fair, i dont recall if it was there on the day i purchased it.
i used my baster to blow on it gently in case there was something on or around it causing iritation.
from the point i put it in my tank the day i bought it, it opened right up the same day, and have had no issues with it whatsoever, up until the day it decided to close. not sure why it seems to stay closed, or only partially opened. perhaps the 4th polyp is new, and may have caused it to close, i dont know, but need your thoughts.
i used my baster to blow on it gently in case there was something on or around it causing iritation.
its in an area where there is moderate flow, and the light, as you can see, is not intense or overly bright
parameters-
salinity- 1.026
ammonia-0
nitrites-0
nitrates 10-20
calcium 400
alk-10.5
PH-8.1
temp 78-79 deg
other coral life- hammer coral, GSP (purchased same day from the same shop), another colony of zoas. all are doing well, none show any signs of something that would be happening within the tank, and just seems to be local to the one small zoa frag.
p.s. i am aware that the shrimps, crabs, snails, etc will cause them to close. although the shrimp is near it at this time, he just made an appearance for a pic opp. normally, these would open eventually, if they were touched by an invert. these when i watched them close up, were not touched by an invert
i used my baster to blow on it gently in case there was something on or around it causing iritation.
from the point i put it in my tank the day i bought it, it opened right up the same day, and have had no issues with it whatsoever, up until the day it decided to close. not sure why it seems to stay closed, or only partially opened. perhaps the 4th polyp is new, and may have caused it to close, i dont know, but need your thoughts.
i used my baster to blow on it gently in case there was something on or around it causing iritation.
its in an area where there is moderate flow, and the light, as you can see, is not intense or overly bright
parameters-
salinity- 1.026
ammonia-0
nitrites-0
nitrates 10-20
calcium 400
alk-10.5
PH-8.1
temp 78-79 deg
other coral life- hammer coral, GSP (purchased same day from the same shop), another colony of zoas. all are doing well, none show any signs of something that would be happening within the tank, and just seems to be local to the one small zoa frag.
p.s. i am aware that the shrimps, crabs, snails, etc will cause them to close. although the shrimp is near it at this time, he just made an appearance for a pic opp. normally, these would open eventually, if they were touched by an invert. these when i watched them close up, were not touched by an invert