Coral changing whats up

[Dr RBG]

What if anything is wrong with these. The colony seems to be developing brown stuff between the polyps, Attached pic,

and params

 

[murphreef]

Looks like thos acans are slowly dying and receding from the edges.... What you are seeing is the skeleton being exposed and algae growing on it now.

As far as your paramaters hard to exactly pin point what is going on but I would never run my Alk at 10.7...... I keep mine @ 8.0-8.5 and my LPS all do great and grow nicely.

 

[Uncle99]

All ok to me except phosphate shown at 0.60 (must be wrong maybe 0.06?)
Mine is 0.02-0.04 and My GFO kicks in at 0.1