I have been fighting the standard "green" pool. Below is current readings at the present after 10 days.
(Pool store readings)
Temp: 80 (Provided)
CYA = 40 (After 67% drain and refill using your pool math for 120 CYA reading a week ago.)
Tot Hardness: 123
Whats been done since this reading:
Added 4# Dichlor Shock in an effort to raise the level in order to proceed to the (Yellow Mustard Algae) level. I do not know how to measure the chlorine at this level any help would be appreciated.
I put 5ml pool water to be tested with 45ml of tap water and then tested this. I multiply the results by 10. Will this give accurate results? If not, then how to measure FC?