Losing everything

[Briano]

Had this rock for six months all was thriving until I saw this I took the whole rock out a week ago and looks like I’m losing all of my corals .Tank is 2 years old all water parameters are coming out ok .Ready to throw in the towel tank is 165 mostly coral with 6 fish the fish are fine .If someone knows what this white stuff on this rock and how to treat it thanks in advance

 

[vetteguy53081]

Had this rock for six months all was thriving until I saw this I took the whole rock out a week ago and looks like I’m losing all of my corals .Tank is 2 years old all water parameters are coming out ok .Ready to throw in the towel tank is 165 mostly coral with 6 fish the fish are fine .If someone knows what this white stuff on this rock and how to treat it thanks in advance

Sorry to see. This looks like a parameter issue and can be caused by quite a few issues and below is a list of things to check
Some possible triggers of infection are:
- Alkalinity spike
- Temperature spike
- Salinity spike
- Low dissolved oxygen
- Poor water quality related with phosphate levels up to 5 ppm
- Change in water flow
- Additions of sand
- Changes in brand of salt
- Bad test kits giving faulty results
- Levels of minor elements such as Iodine, Potassium, Strontium
- Light intensity
- Addition of new corals

Salinity: 1.025-1.026
nitrate 10-15
Phos .06- .1
calcium 410-4540
alk 8-10.5
Mag 1350