Yup a simple KISS would work loads better here.
Quit dosing all that crap, stick to dosing ALK, CAL, MAG, do regular weekly WC's, or if you like automation, setup daily auto WC's. KISS really does work.
I'm also a firm believer in heavy in, heavy out. Meaning up your bioload, feed your fish heavily, then let your fish feed your corals. Then run some heavy export methods. While residual N & P look great on our test kits, our coral actually prefer ammonia over those residuals. Hence why you need more fish to feed the corals.
FWIW...
Nothing wrong with IO salt, been using it for the better part of 30 years, heck 90% of the tank of the months run on IO. Its the oldest salt on the market for a reason. It just plain works, and is the most consistent from box to box. Just because a salt is more expensive, or from a company that's supposed to be better, doesn't mean it is.