This is my first post so please be gentle with me...
My pool is green so I googled and found this wonderful thread, which tells me I have to hit hard with free chlorine (FC).
After reading the first post of that thread a half-dozen times, I realize that the time the free chlorine lasts is (somehow) an indicator of how much algae is left alive.
But I'm confused about how living algae do that. What is it that makes the free chlorine drop when there is living algae, but, when the algae are dead, the free chlorine doesn't drop?
Q: Are the living algae 'eating' the chlorine?
(or is it something else that makes the chlorine drop when the algae are still living?)
My pool is green so I googled and found this wonderful thread, which tells me I have to hit hard with free chlorine (FC).
After reading the first post of that thread a half-dozen times, I realize that the time the free chlorine lasts is (somehow) an indicator of how much algae is left alive.
If the FC remained stable (within 0.5 of the same reading) overnight, and the CC level is 0.5 or lower then all of the algae is gone.
But I'm confused about how living algae do that. What is it that makes the free chlorine drop when there is living algae, but, when the algae are dead, the free chlorine doesn't drop?
Q: Are the living algae 'eating' the chlorine?
(or is it something else that makes the chlorine drop when the algae are still living?)