Need urgent help

[DDK]

Hello my reef family

today morning all of a sudden my hammer corals Did not. Open they use to open very big. What to do please help.

regards

 

[Troylee]

How long have you had them? Survival rates of wall hammers isn’t very good compared to branching.. has anything changed in the tank? What’s your mag at?

 

[DDK]

I had them from 3 months and here are my parameters
Regards

 

[Troylee]

I had them from 3 months and here are my parameters
Regards

Mag is way low! Get that up to 1400ish.. salinity a touch low.. not bad thou.. ph way to high.. want that 8.3 tops… are you dosing kalk or something? What test kits are you using?