Bird nest issues

[Timandkatereef]

Hey everyone. For some odd reason my bird nest has took the turn randomly.

Here are the tests

Alk 7.6
Mag 1100
Calc. 417
I know my mag is low I’ve been dosing it trying to bring it back up.

What could be the problem?

 

[ReefStable]

Unfortunately I think it's too late for the birdsnest. If you had it for a while, likely a shift in Alk or pH. They are fast growers but very touchy to change in parameters.

A shift of 1 dKh in 24 hours is usually enough to cause problems with birdsnests.