Pectinia emergency

[BigBoieReef]

Hey fellas

I bought a nice pectinia yesterday days and when i put it in my tank she looked great.
Today she had gaping holes where her mouth were and there is one almost ripping appart. Parameters show that the water is stable, still doing the kh mg and ca, i have moved the coral to a low flow in the tank with low light and its already on dip treatment what should i do to avoid the worst?

 

[ndrwater]

What was the alkalinity of the system the coral cam from, and what is the alkalinity of the tank with the pectinia?

 

[BigBoieReef]

Ok here are the parameters of my tank
ph-8.4
NH4- <0,05 ppm
NO2-0,1
NO3-10~15 ppm
PO4-0,4 ppm
Ca-480
Mg-1230
Kh- 10

Im already preparing water for a quick emergency water change and im dosing Mg
The Kh of the store i dont know since the owner forgot to tell me, ill have to call him first thing when it opens. ndrwater

 

[ndrwater]

The first thing that grabs me is alkalinity. At 10, while not high, probably higher than whatever was at the store. I wouldn't necessarily start chasing numbers and changing everything in your tank, I would let things be, cross your fingers, and see how things go. this is a reason why we need to do a long drip acclimation on any new additions in our tank. Alkalinity swings can be devastating to new corals

 

[BigBoieReef]

I know that pectinias are fragile and delicate like chalices so i did a 2 hour acclimation period.
Im doing the water change mainly due to the PO4 values that it gave me
Still ill only do them in 20 hours so untill then ill cross my fingers

 

[CindyKz]

It's hard for me to see in your pictures, but it looks like it might just have it's mouths open. Mine does that from time to time, then it's fine a little later. Yours might just be getting used to the new surroundings. My own rule of thumb is to never change parameters of the entire tank based on one coral, if everything else is happy.

 

[CindyKz]

OP, how is your pectinia looking today?

 

[BigBoieReef]

CindyKz already started loosing some flesh.
The Kh in the store was 8 and i already did a water change to try to lower it. Atm im already preparing water for another water change but ill have to run for salt tomorrow since im out of it, quarantine wasnt easy in our stores over here

 

[BigBoieReef]

Oh i forgot to mention. It has been 2 hours since the water change and ive made kh drop a bit and PO3 lower significantly. The pectinia itself has started to close some of its mouths, wich is positive, still ill keep doing the water changes moderatly to lower kh and PO3

 

[CindyKz]

Hope it pulls through for you!

 

[BigBoieReef]

Hope it pulls through for you!

Unfortunatly it didnt
Its started to loose flesh way to fast and it was poluting the water, so i had to take it out of the tank to save all of the coral and fish that i have to avoid the worst case scenario.

Thanks all who helped me in this thread, thought!!!!!!!

 

[CindyKz]

Unfortunatly it didnt

I'm sorry to hear