How long can a mixed batch of Jack’s 321 last?
I’ve used it up to 5 days, but that’s because it doesn’t last longer. I’ve seen up to a week. Just monitor pH. I wouldn’t go more than a week just as a precaution.
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Thank you.
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Like @Borderryan22 said watch the pH. It creeps up every day so you just need to adjust it each day before you use it.
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