Acro white in shaded area

[edrosales]

Hello,

Why my acroporas and other corals are white in the shaded areas? I using led lighting.

The parameters are:

PH: 8
KH: 7
Calcium: 380 (little low)
Magnesium: 1.180 (low)
Salinity: 1026

Thanks.

 

[scrapz]

Led has been known to spotlight and have massive shadowing and coverage issuea due to not having enoug fixtures. Add more leds if you can afford it but I suggest adding some t5 retros like most led users have done.