What Is Free Chlorine In A Hot Tub. Free chlorine is the most important type of chlorine to monitor because it is responsible for actively sanitizing your pool. Ineffect, this chlorine in the water is freely available in the water for allkinds of sanitization purposes.
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. Levels above that can lead to red, itchy skin & eyes, & respiratory issues. 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.
The combined chlorine level should be 0 ppm while the total chlorine level should be between 2 and 4 ppm.
Levels over 5ppm can lead to chlorine poisoning which adds the symptoms. The recommended free chlorine level for a swimming pool is: The ideal level of chlorine in a hot tub is between 1 and 3 ppm (parts per million), with bromine’s ideal level ranging from 3 to 5 ppm. You need to be able to test free.
