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I have successfully treated scale in my pool with Jack’s #2 - sulfamic acid. I am now helping a friend remove stains from his pool. We used the Jack’s ID kit to identify his staining. Sulfamic acid alone is going to be the best solution if we go the Jack’s route. Is there a more efficient...

In 2021 Richard Falk @chem geek published a chart illustrating pH ceilings for different levels of alkalinity. A copy of the chart can be found here: CO2 and pH: Understanding Henry's Law Would there be any harm in targeting the following metrics to lower the pH ceiling and and reduce the...

- I understand the CDC recommends a minimum of 1ppm of free chlorine. - Alternative systems, such as mineral pools, claim you can get away with 0.5 ppm of free chlorine. What is the minimum amount of chlorine needed to maintain sanitized water? If my residential pool is not being used, I don't...

A number of State Health Department publications mention a "point of no return" when attempting to reach breakpoint chlorination. The Indiana State Department of Health published a guide that states: "To achieve the breakpoint, the free chlorine (FC) added to the water must be about ten times...

Hello, I am using Jack’s Magic Copper and Scale Stuff #2 (Sulfamic Acid) to treat scale. To my knowledge I don’t have an issue with copper. I started the process 2 weeks ago and started slowly rebalancing the pool 2 days ago with sodium bicarbonate. I am using Jacks Fiber Filter Stuff along...