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Alk gets absorbed into corals a lot quicker than calcium so that is why it swings more. Calc and alk have a seesaw effect (if that makes sense) so yes dosing calc is necessary or you can really drive your calc down and your alk up.
What the others said above is correct. Also, depending on the chalice, it can change. Some of the thin skin deep water indo ones have to be completely in the shade or they will bleach out. Others can take a bit more light, but generally they are down in like 200 par areas.
Do you use and rodi unit? Did you change anything else but the salt?
It sounds like something was poisoning the inverts and the corals which could be copper or some other contaminate. I would absolutely switch back to reef crystals if you think the red sea coral pro was an issue.
The 90...
If you jump on Ebay you can find them real cheap, just don't know how good they will be. No idea on the goosenecks, but the reputable ones seem to have no issue holding the bulb.
Look into the blue stripe pipe fish, they will do much better in a reef tank. They are easy to pair as well. We love our yasha goby, they are also really easy to pair (look for the black spot on the pelvic fin, that is a male, the female does not have one). I lean towards the tang police side...
Our host for September is not longer able to host this month. It was a north meeting, but if anyone would like to volunteer to have a house full of amazing reefers. Drop someone on the BOD a line. Thank you.
I went to costco a few months ago and bought a vitamix. Damn expensive, but the thing is a miracle worker. I read the reviews on the ninja 1000 which seemed to be seriously lacking (even though consumer reports gave it a good grade). The bullet received very solid ratings as well.