Is my Xenia Dying?

notsonoob

Member
I had three nice Xenias, all but 1 perished and that one was reduced to a tiny form of it's original self.
You need to check your parameters, plus I think Xenia's live off of some nitrate and I don't believe that they like really clean tanks.
Are you ensuring that your trace elements are ok?
 

bang guy

Moderator
It looks like it's not getting much waterflow.
Make sure Alkalinity and Calcium are in balance and at good levels.
 
I recently changed to a T5 system and sicne then I've had an algae bloom. The Xenia looked great the first couple days after the lighting change. But now it has shriveled and turned a whitish color. I've tested my water every week at the LFS and they say my water is perfect. The Xenia is not in direct water flow and I do not use a RODI unit, could that be the problem??
Thanks!
 

bang guy

Moderator
Can you list the water parameters? Perfect doesn't really give an indication of what your parameters are.
 
Well I can tell you that my ammonia is 0 my temp is 78 and my SG is 1.022. Other than that my LFS said everything was great other than a nitrate of .10/.20 Which they said was normal. My arrow crab hangs around the Xenia at night, could he be killing it??
 

nycbob

Active Member
i hv a whole colony of xenia that died 3 week ago. a few polyps survived, and now its trying to make a comeback. i water parameters r perfect bc i hv 5 clams and a bunch of sps, and they r all thriving. urs might come back after a few weeks.
 

bang guy

Moderator
Sorry to be a pain, I really am. I just don't know what "good" "fine" or "perfect" water parameters means. It would help understand a lot better if I know what the Calcium and Alkalinity levels are.
It looks to me like your Xenia are stressed. Not dying but stressed. Often this is from low alkalinity.
Your salinity and temperate are low that would stress many species of Xenia, especially Red Sea Xenia.
I have never heard of an Arrow Crab harming Xenia. Each animal is an individual but I don't think it's likely that the crab is stressing your Xenia.
 
I would have to get my water tested at my LFS to get specific measures. Should I do anything in the mean time to help? Would the algae bloom be effecting it in anyway?
Thanks everyone,
 

bang guy

Moderator
Originally Posted by Smellslikefish
I would have to get my water tested at my LFS to get specific measures. Should I do anything in the mean time to help? Would the algae bloom be effecting it in anyway?
Thanks everyone,
An algae bloom indicates excess nutrients in the water. Xenia actually prefers excess Nitrate but excess phosphate can cause trouble if it's really high.
Algae can also affect PH. It will cause PH to be higher when the lights are on and cause PH to drop a lot at night. Xenia hates fluctuating PH so that is a definately a possibility.
I don't think your problem is urgent (yet). Next time you get to the LFS buy you own test kits. Calcium, Alkalinity, PH, Phosphate are a good set to start with. If you're feeling energetic, Magnesium and Nitrate are also good.
Raise your salinity! You're below 32ppt and for Xenia the Salinity should never be below 35ppt. Raise salinity gradually by replacing evaporated water with saltwater instead of fresh water. It will climb to 35ppt in about a week or so depending on your evaporation rate. Once in the 35 - 37ppt range go back to using fresh water for topoff.
 
It was doing so well right after I upgraded the light. The lighting was the only thing I've changed. Sorry for the blury picture.

 
I repositioned the Xenia to a lower place in my tank and I will raise the salinity gradually. Thanks for all of your responses, if there are any other segestions please feel free to post!!
Thanks
 
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