Pulsing Xenia problem, advice needed

[Sharkbait19]

Hi,
I have a pulsing Xenia that used to be on the sandbed until it started dying. I then put it on my rockwork and it exploded in growth. Then I started noticing that the tips on the polyps are turning white, like so:

At night, they shrink down like this:

If this was only happening to one or two stems, I wouldn’t be so worried. But this is now happening to the whole colony, as of yesterday. Can somebody explain this occurrence, and if I should do anything to remedy this? Thanks!

 

[vetteguy53081]

Hi,
I have a pulsing Xenia that used to be on the sandbed until it started dying. I then put it on my rockwork and it exploded in growth. Then I started noticing that the tips on the polyps are turning white, like so:

At night, they shrink down like this:

If this was only happening to one or two stems, I wouldn’t be so worried. But this is now happening to the whole colony, as of yesterday. Can somebody explain this occurrence, and if I should do anything to remedy this? Thanks!

This will happen due to:
High salinity
High pk
Too much flow
Insufficient lighting or too bright
Low or no phosphate/nitrates

 

[Mav88]

^^^^^Besides how much they spread Xenia are good early indicators of water quality issues, test params.

 

[Sharkbait19]

This will happen due to:
High salinity
High pk
Too much flow
Insufficient lighting or too bright
Low or no phosphate/nitrates

That’s it—High salinity! A few weeks ago I did a water change and must’ve messed up because the salinity went up to 1.028. Perhaps it got damaged. It is also directly in the flow, but I can’t see that as a major problem, because it’s only helped it spread...

 

[TheTipsyDragon]

What is pk?

 

[WalkerLovesTheOcean]

What is pk?

I think it was a typo and was supposed to be, "pH".

 

[TheTipsyDragon]

I think it was a typo and was supposed to be, "pH".

Oh ok thanks! I was like looking all over the web and could not find the answers