Once ur big 3 hits the minimum required for marine tanks, Coraline algae will start to grow. Calcium 400-500ppm, KH 7-11dkh & Mg 1200-1500ppm. Keep these 3 parameters at higher but stable constant levels and u see ur Coraline algae growing fast as well as ur sps if u have any.
Thanks for the detailed explanation, I have no major algae issues, only a small patches of bubble algae.. I wonder with more sps to over the patches will slow the grow of the bubble.. not an issue at the moment, just don't want it get out of hand..