Growth or burnt tips?

[Gho5t]

I’m new to sps so I’m not sure which one I’m looking at. The corals have been good for the past three weeks and the white tips just started. I did notice one of the other ones has grown a tiny bit and generally they seem good. Levels are all stable at:

Alk: 8.5 dKH
CA: 420
MG: 1380
Salinity: 35ppt
Nitrate: 10
Phosphate: .06

 

[Shaka_Reefer]

Burnt

 

[Gho5t]

dang