??? on zoas / palys

[maelv]

About 2 weeks ago, I received some zoas / palys from an online retailer and someone else I had purchased from in the past. My questions is most of them are still closed up, and I can't figure out why. It doesn't look like the zoas are dead or dying, just still closed up. I gave it a couple of weeks to see if they would open and most of them haven't.

I have sat around and looked...no, stared at them to see if I could see any worms or anything else that could be harrassing them, and did not see anything. I left them on the substrate for about a week before placing them on the rocks where they will reside. While on the substrate some opened up at first, but then closed back up and are still like that. My Acans, candy cane, and a couple of zoos are doing just fine though..and I received them all within a day or two of each other.

Any help would be greatly appreciated, I am not sure if high calcium & alkinity would contribute to this problem. Here are my tank parameters as of yesterday evening, because just did a 5 gallon water change about an hour ago (29 gallon display, 10 gallon sump/fuge):

SG: 1.024
Ammon: 0
Trites: 0
Trates: 20
PH: 8.0 - 8.2
Calcium: 510
Alk: 11.2 (dKh) or 4 (meq/L)
Temp: 82 degrees
250w Radium XM 20K bulb (about 3 - 4 months old)

[killingseed]

reduce you day light maybe run just actinics for a couple day. it can take a couple day to a couple weeks before they start opening.

keep us posted

[maelv]

Thanks for the response,

I currently am only running MH, and only 8 - 9 hours a day. Lights come on at noon, and go off at about 8 - 9 in the evening. There is plenty of ambient light coming through the window so it isn't completely dark in the tank throughout the morning.

I can still try cutting back on MH lighting, how long should I be running it?