That sounds very hard work Morgan, for what it's worth I just take water from the tap ( I have a mixer tap with hot water from a combi boiler ) that is close enough for me to the temp of my tank water, add the correct amount of stress coat and pour into my tank.
I never have any problems and all fish are fine, been doing it that way for 2 years. The hobby is hard enough without making harder.
Oh Morgan, I and plenty others on here think that stress zyme is a complete waste of money, it does very little for a new tank let alone an established tank. Do yourself a favour stop wasting GOOD money on it.