So my neighbour has a hot tub and didn't have any sodium bromide, nor is it possible to buy it in stores in my area. So she used a 2 part bromine solution (it's only like 14% sodium bromide in it and a few other things, I'm guessing to activate the bromide). Plus she's using bromine tabs in a floater. She uses bleach after use and to shock the tub.
Now I know that until enough bromine tabs dissolve that it will be a chlorine tub and not a bromine tub, but would the bromine solution she used change that? Would it make it a bromine tub? If not, how do you tell once enough bromine tabs have dissolved to turn it from a chlorine tub to a bromine one?
She also has something called "bromo shock." It's a granular bromine solution that says it's to be used to shock bromine tubs. Should she use that to shock, or continue to use bleach?
For testing, she does the same thing I do, uses test strips to get a rough idea, and takes a sample into the spa store twice a week to get it properly tested. I know, I know, we need to get a taylor test kit. But they don't sell them in my area, so we have to buy from Amazon or E-bay, but the shipping, taxes and duties are killer.