White spots on zoanthids disk?

Postyoa28

New member
Fellow reefers,

Lost power on my office nano-reef tank for up to 36 hrs at most because of the Hurricane Sandy on Monday. Since this is the worst of my problems, I consider myself lucky. The temp. dipped down to the low 70's high 60's. 6line wrasse, peppermint shrimp, emerald crab all fine. Mushrooms, GSP, clove polyps, kenya tree, frogspawn, orange digitata, unknown acropora, and unknown other sps seem to be fine. Feather calupera is fine too. Also fine are 2 out of the 3 zoa colonies. 1 on the zoa colonies have multiple white dots, approximately 1 mm across on the disk of the zoa's. Not all of the zoas have them, but it appears 50/50. Spots are only on disks, not on the sides or stalk when extended or retracted. I'm thinking these are not zoa pox from what I've seen, and are most likely a result of the temp dip, but I would like input from others.

Other corals that are worse for wear are my pulsing xenia colony and the green polyp toadstool leather. The xenia was shrunken and not pulsing but has slowly extended and began to pulse as the temp has come back up. The toadstool is still retracted with polyps tightly closed. Temp is slowly coming back up to 80, and hasn't reached it yet.

Tank specs

10 gallon
HOB aquaclear 50 with sponge, carbon, and ammonia remover insert
50 watt heater
RIO 90 (85gph) powerhead
Ammonia 0
Nitrite 0
Nitrate 20 (test kit is old, I believe this result is in error)
Last water change was a 2 gallon change the previous Friday (today is Tuesday)
Tank is 5 months old



Will add pictures later if interested.
 
Do you know if any salt creep from the hood dropped in the water and therefore on the zoas?
Could be a sign of bleaching because of the temp. shock too.
Some people say that something similar could occur when there are sudden changes on alk and/or salinity.
Some bacterial infections could show that type of symptoms, but I think there is a low probability to be the case.
Wouldn't be predation either, right? Just because of the lost of power...

If there is no bacterial infection, it will probably be ok in a week or so.

That's all I can remember for now...
Hope other could chime in for more.
Pics?

Good luck!

Grandis.
 
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