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Our city water is 250 CH, and at this time we don't have access to a water softener. We may get one in the future, but right now we only have city water. Thanks for your reply.

We recently purchased a home in San Marcos, CA with a pool. We know nothing about pools, except how to swim in them. So I have a few questions: FC - 5 (tested with AquaCheck Select because chlorine powder missing from TF-100) CC - 5 (also with AquaCheck) pH - 8.0 TA - 160 CH - 430 CYA - 45 I...