First SPS help

[850csmith]

Ive had this green pocillopora for about 5 months ive had really good growth color and PE but now the bottom of the coral is white and i see no PE. Is this normal and what can i do to fix it?

This is when i got it

This is now please ignore the hair algae

 

[Tahoe61]

The tissue can become pale in areas not directly receiving light, but there is tissue loss. The presence of algae at the base may be an issue. Are the alk values consistent to NSW values? Is flow being impeded?

 

[850csmith]

Good flow
Levels have been pretty consistent at
Alk 11
Cal 430
Mag 1380
Ph 8.2
ammonia 0
No2 0
No3 0
Po4 .10 or less
New cuc to help algae
Lighting led black box
Blue 25%
White 20%

 

[850csmith]

So do you think its not enough light or the algae and what can i do to help it