Metals testing is the only testing TFP recommends to have done at the pool store. This is simply because it is impractical for the average homeowner to purchase these tests as they are used very infrequently. You will want to have the pool water & the fill water tested for copper & iron.
All other testing should be done by you on a regular basis (some daily, some weekly, & some monthly) with a recommended test kit
Test Kits Compared as most other pool store results in general can be flawed.
Are you having issues with staining of surfaces or hair/nails to suspect a metals issue?
Here’s some info on metals in pools & how to deal with them
www.troublefreepool.com
Calcium hardness is different from total hardness.
The only one to worry with in regards to your pool is calcium hardness.
You need to test your fill water (note the ch so u are aware of what you’re working with) & monitor your pool water’s ch with your own kit. As This is one of the tests that can vary wildly at the pool store.
www.troublefreepool.com
Taking advantage of rain water instead of from the tap can help slow ch rise & provide dilution.
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