Reaquascaping and pwc

[reisy00]

Last night I did some reaquascaping moved several rocks and 2 or 3 coral. Once I was done I did a 25% water change. This morning I woke up and my montipora was almost all white, birds nest looks like it has rtn and my frog spawn is not opening. Those three corals are not the ones I moved. I checked water everything was perfect, my calcium was slightly low 390 . Any ideas what could have happened?

 

[Aidanflower]

Did you disturb the substrate, if so how much?

 

[reisy00]

Only took one rock off the sand so very little.

 

[Aidanflower]

What are your water paremeters and phosphates?

 

[reisy00]

1.026, ammonia-0, nitrites-0, nitrates-2, calcium-390, phosphates not sure but I do run a reactor.

 

[bribo12]

What are your magnesium and alkalinity reading? If they are getting different flow that could be the issue too.

 

[reisy00]

The montipora is getting slightly different flow but the birds nest is in the same flow.