Pool & Spa Water Problems

Question 1

Cloudy green water is most likely:

Answer 1

Algae

Question 2

The equation for combined chlorine is:

Answer 2

TC - FC

Question 3

What is the combined chlorine if the free chlorine tested at 3.2 ppm and the total chlorine tested at 3.6 ppm?

Answer 3

.4 ppm

Question 4

Using Appendix B-2, how much sodium bicarbonate is needed to raise the alkalinity in a 35,000 gallon pool from 60 ppm to 110 ppm?

Answer 4

24.5 lbs