Coralline driving me crazy!

[Leah]

I agree with you on the coraline, why can't it just stay on the rock. It is an ever ending
battle. I have a tuxedo urchin in my 72 gal and I still scrape off the coraline every water
change. I find if you keep it up it is way easier. If it is hidden behind the rocks I just leave it. Not sure if it makes any difference having the urchin as he has been in there
from the start basically. But certainly worth a try. I think you either learn to live with it or make yourself crazy scraping it off. Guess you know which I choose.