Welcome to R2R!
The purpose of rocks in the reef tank is to provide filtration through beneficial bacteria that lives in/on it. Granite does not have suitable filtering capabilities for a reef, I believe that’s why the other posters are questioning your rock. So, what other kind of rock do you have in there?I treated the rock based on forums like this and YouTube... I know it is fine because it hasn’t effected my water parameters or the clownfish.... I have some granite too also treated.