No they will NOT just fall in the right area. You need to test and dose individual products as needed. If your not able to test then do NOTHING but water changes until you can get testing done.
if you really must have/spur corallines... do seek Seachem's (great brand... they actually do R&D) "Reef Calcium" (calcium polygluconate). Used as directed... it stimulates slow and steady coralline growth. Within 3-4 months you will be pleased.