From the sticky, @chem geek said:
Can I calculate my oxidizer amount linearly based on this? For example, I have 10% bleach and a 220 gallon tub, so if I say .06 "oz units" of chlorine per 350 gallons is equivalent to .0377 "oz units" in a 220 gallon tub, then .377 oz of 10% should raise my tub 3 ppm of bromine from my bromide bank. Is that true? And if I divide by 3, then approximately 1/8 oz of my 10% in my 220 gallon tub converts bromide to bromine at 1 ppm?Code:How do I use Bromine in my spa (or pool)? You could just add some bleach or MPS, up to you (bleach is less expensive, of course). Each fluid ounce of 6% bleach in 350 gallons would increase the bromine level by around 3 ppm.
Also, with OTO, after adding bleach, will my reading be total bromine + chlorine until the conversion is complete? About how long does the conversion take (minutes, days?)?
Does the chlorine FAS-DPD (R-0871) test show me only chlorine?
The addition of borates made an instant improvement. I highly recommend it. The water is "sparkly" and feels better. And getting the TA just right so that the pH stays constant has made everything so much easier. Thanks for the guidance TFP!