Duncans, hammer and scolys not doing so hot

[Mike H2020]

For the two weeks my duncans and hammer frags have been receded into their body tightly and have has zero signs of opening up. Also have two scolys that have begun to show their skeleton. Tank parameters are:


Sal: 1.025
Ph: 8
Alk 8.1 dkh
phos: 0
Nitrate: 20 ppm
Calcium : 550 ppm, a bit high ?
Mag: unknown

Would the calcium/mag levels mess with the corals ?

 

[vetteguy53081]

Yes ca and mag would
It’s possible that you have them on the sand and sand is getting on them and irritating them.

moderate light and water flow
Temp 77-79
Salinity 1.025
Ph. 8.1-8.3
Nitrate < .04
Pho’s < .04
Ca 440
Mag 1300
Alk 8-9