I have a 7 months old nano reef tank. I don't see any coraline growth besides the coraline from the live rock. But even on the live rock it dosen't grow. It just stays the same... About 3 weeks ago i saw some dark green spots on my main rock. Since then the spots started to expand i dont know what is it but if it helps i can post some pics here. What do you think is my problem with coraline, why it dosen't grow and what are those green spots?
The greeen spots :
The greeen spots :