Hey Stephs!!! I’m with you at 7.4. But. The only values that really matter are high and low. Any 7.X is fine. With a vinyl pool CSI is much less of an issue for you than some with plaster that need to target a more specific #.
when you find it’s getting close to out of range, pay a little more attention to it and be prepared to adjust if it keep swinging. The worst that happens if you adjust a little early if you’re color matching skills are a bit off that day.
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