Well, I thought shopping for and choosing a tub was confusing. Now I realize we have to figure out the chemicals!
We bought a reconditioned Marquis Destiny which comes with an ozonator and an inline Spa Frog system. It does not come with any starter chemicals or assistance in getting things started other than delivery.
I did a little research and decided to try out bromine first, along with the "mineral stick." I ordered this starter kit which comes with 3 bromide cartridges, 1 mineral stick, testing strips, and small bottles of shock treatment, ph and alk decreaser and increaser, and calcium increaser:
https://www.amazon.com/gp/product/B01N2O0GO8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1I am assuming the shock treatment that comes with this set is compatible with bromine but I'm having a hard time confirming this. I still have reading to do to figure out initial set up, but would love if anyone could help put things into plain words as I'm a little overwhelmed by all the info I've found.