I also raised my calcium to 430 and the alk to 9 dkh and it is really taking off. I don't now if it's actually necessary to raise it that high. I don't have any corals yet. It may just be my imagination.
But it seems like it has. I know I now have to keep up the cleaning of the front and side glass a lot more than before I raised the calcium level.
Someone said to me just recently on this forum, watch what you ask for. Corolline can be a pain to remove.
Regards,
Pat