Had issues with two chalice coral...

[Speg]

I've had these two watermelon chalices for about 5 months now. They've been doing great since day 1 (until two weeks ago).

I started to notice a white area on one of the chalices and then noticed that the green watermelon area was starting to shrink...eventually it was to the point that it was all gone. The flesh started to shrink and the skeleton was showing more and more.

I moved stuff away from them thinking that maybe it got stung. It's the only two little frags that are not doing good in my tank at the moment. The small 12 gallon nano has a mix of softies, sps, and lps...it's so weird that the chalice are the only things that were affected.

They were close to: Candy Cane, Jasmine/clove polyps, and three ricordia Floridas. I personally didn't witness any touching and looked a couple times with lights off and didn't notice anything either...there are quite a few pods that roam around that area and some pods are quite large.

Now that they're in my other tank, the flesh looks puffy again and they look like they'll be able to recover... what do you guys think may have caused it? It almost looked like the green ring/watermelon part of the chalices were the target and looks like they were either stung or getting eaten...thoughts?

 

[Emoney]

Ive had same issues when my alk when from 9.6 to 5.8 in two weeks time ( raising calcium and not alk also)..also feel Mag levels are important also!

Check on corals with the light off to see if anything is touching them

 

[Speg]

You know what..I tried dosing kalk at about that time....maybe that's it!

 

[stedfast82]

mag is very high on the list for chalice i keep mine at 1450 to 1600 at all time's ive had some die off all the way and come back so don't give up on them.

 

[Speg]

They're looking great now in the other tank. I guess I'll let the water settle and keep up with the changes in the 12 gallon and switch them over after they've been able to recover some.

Thanks!