no green algae growing?

[reefwars]

you should get a look at your other parameters like cal,mg, and alk.having no green algae........ some would consider great.if your coraline isnt turning white and its on the glass then it will spread but depending on what your other testings are could be the reason you dont see any on the rocks grow.do you have any urchins?? some can chew up coraline pretty good