I have had new lights for almost two month and....

[kyarnkid]

I have no new coralline show up, how long does it take, I leave the lights on about 10 hours a day. I try to turn the blues on more but I usuall just run them about 11 hours. The lights are helios 220w, 55w apeice, for a 55

 

[surfnturf]

Check your calcium levels, coralline needs that to grow, your lights should be more than sufficient for coralline.

 

[ekclark]

I think you also need a good amount of flow rate to get the little spores moving.

 

[hondo]

Calcium at 400+ and DKH at 8+ = good corraline growth. Light has very little to do with it as too much light and the corraline bleachs and dies off. As stated earlier good flow through the tank helps spread it around. If you have a rock with some growth on it point a PH at it and get the calcium and Alk to proper levels and you'll get good growth.