Coralline algea question

[oyf709]

Just wondering , if coralline algea start to grow, is that a good sign?
Maybe this a bit funny, tank was running over a yr and half, my coralline algea never grow, it might due to the fact that 2 of my urchins are eating them.Last night found some coralline algea start to grow on the glass near powerhead, just wondering if it means my tank's condition is good.
thanks

[grimlock3000]

Coraline growth is certainly a good sign. Maybe you tank is just matured to a point where you can produce new coraline algae growth faster than the Urchins can eat it

[malkore]

coralline growth is related to calcium and alkalinity levels in the tank (though calcium is the major contributor)

[oyf709]

oh maybe thatz why, i started dripping Kalkwa last week, and it start to grow.

[grimlock3000]

If the Kalk drip kicked it off so quickly, you tank has probably been Ca deprived for quite a while. How often are you doing water changes? Do you test Ca/Alk?