Help

[Charlie brown]

My friend bought me this favia coral as a gift for my b day in November was pretty small but it's been doing good and got way bigger but this morning I was target feeding and noticed the color from the mouth which is bright lime green started flaking off nothing in my water parameter has changed and I haven't added or removed nothing should I be worried it's the first mouth on bottom right corner

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[sfin52]

What are ur water parameters.

 

[Charlie brown]

Ph is 8
Alkalinity is 9
Nitrite 0
Nitrate 1.5
Ammonia 0
Phosphate .3
Calcium 380
Magnesium 1300
Salinity is 1.023

 

[sfin52]

I would increase cal to 450 salinity to 1.024 -1.026 nothing real horrible off. Moderate flow and moderate light. Moderate light is about 150 par.