Brown to green to white algae?

[surfjnkie9]

Hey guys, I had brown algae bloom in my tank a few weeks ago because of phosphate levels. I took care of the problem and the algae became really bright green. Now the live rock is starting to get a somewhat white coating on it in place of the green algae. Is this coraline algae growing??
Parameters:
Ammonia, Nitrite- 0
Nitrate- 10
ph. 8.2
Salinity 1.024
Temp- 79-81
:notsure:

 

[evilss]

i have some white coraline growning on some of my fiji. looks kinda cool. what are your cal levels?