Calcium Hardness Level Discrepancies

GMusic · Apr 21, 2020

I see two different recommended calcium hardness levels on TPF:

220-350 ppm: ABC's of Pool Water Chemistry - Trouble Free Pool

350-550 ppm: What Are My Ideal Pool Levels? - Trouble Free Pool

The second and higher range is from what appears to be a newer TFP website page.

Anyway, can someone please explain the discrepancy and confirm the ideal range? Have the recommended levels changed over time, and if so, why?

Texas Splash · Apr 22, 2020

Please use the levels from the

What Are My Ideal Pool Levels?

Use our tool to find ideal chemical levels for any swimming pool. Check TFP recommended levels on pH, free chlorine, cyanuric acid, and more.

www.troublefreepool.com

page. Those were recently updated. Our admin is still playing a little catch-up on the various other links and pages that listed older info. CH levels were broadened a bit based on years of data accumulated which showed a pool owner could adequately maintain their water quality under those parameters. The [POOLMATH][/POOLMATH] APP will also help you manage those levels.

GMusic · Apr 22, 2020

Thanks. It struck me because those ranges are dramatically different. The old maximum is the new minimum.

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Calcium Hardness Level Discrepancies

GMusic

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Texas Splash

What Are My Ideal Pool Levels?

GMusic

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