I am having challenges with my pool. Water is slightly green and I am getting green deposits. Here is my latest water numbers from the pool store:
I used some copper based algaecide to kill off the algae, and I am not seeing the results I would expect. I am also trying to keep the chlorine level high, but have no test kit that will go over 10. My strips go up to 10, and the OTC dropper goes to 5.
After seeing what the CYA does in requiring high levels of chlorine to impact algea, I want to keep my chlorine level high for some days until the bad stuff goes away.
Since it takes 5 drops of OTC into the tube, my thoughts are that if I only add one drop to the tube instead, then my readings should roughly end up as 5 times the amount I find on the color comparator. IS THIS A CORRECT ASSUMPTION?
Because when I did this, I think my chlorine level is greater than 25 as with one drop it is darker than the 5ppm on the tester (1 drop x 5ppm color max x 5 times more water). But my pool store's test indicated that it is only at a level of 4. (my test strips show it at 10 or max level).
Because of the green, and the CYA charts for FC levels to kill the worst stuff, I think I need to run the pool at a shock level of 25 and a mustard kill of 40. How do I know what level I am really at if my tester only goes to 10 for strips and 5 for OTC drops?
Also, am I better off lowering my CYA to 30 or so to get chlorine to be more effective? I don't know how it got this high, but I live in Savannah, Ga with some pretty hot and direct sun. Does anyone have a CYA level that is best for this area (would it be different for a sunny pool and a partially shady pool)?
Any help and insight would greatly be appreciated. This green stuff is kicking my behind. Thanks