What Is Free Chlorine In A Hot Tub. Free chlorine is added in order to clean and sanitize your water. Let’s talk about why this happens, why it matters, and how to lower chlorine or bromine in your hot tub.
It’s not safe to get in a hot tub where chlorine levels are above 3 parts per million on your test strip. If you neglected the tub and have stuff growing in it then you may need to shock the tub with 10 to 15 ppm free chlorine to kill the growing stuff and have a residue in it. Use fresh test strips or fresh reagents and test your spa water at least twice per week, adding water balance chemicals as needed.
When you uncared for the bathtub and have stuff rising in it then it’s possible you’ll must shock the bathtub with 10 to fifteen ppm free chlorine to.
However, changes in how many people are using the spa, how long people are soaking, and other factors can affect the chemical levels of your spa. When you uncared for the bathtub and have stuff rising in it then it’s possible you’ll must shock the bathtub with 10 to fifteen ppm free chlorine to. So, to answer the question, if your total chlorine is high but free chlorine is low, it is an indication that the hot tub requires a shock treatment. Now combined chlorine is the chlorine that has bonded with the stuff it worked on.