Hammers dieing off without a reason?

[Medic755]

Have had two small groups of hammers slowly recede like this and die off. Any help would be appreciated as literally everything else is thriving. Other euphyllia, acans, Zoas, birdsnest. Literally just the hammers.

alk: 8.8
Cal: 403
Mag: 1320
NO3: 6.4
PO4: 0.12

 

[Wbreef]

Have you made any recent changes to lighting or flow?

 

[Medic755]

Nothing recent. It’s been in that spot for maybe a week now

 

[John Neuzil]

Raise your magnesium to 1450 to 1500. Solved my frogspawn problem when other torches and hammers were doing great.