As mentioned months ago, I OD'd the pool with CYA - it tests out at 100 ppm.
Last year it started the winter at 50 and came out 0 - ammonia formation or some such reaction was the diagnoses here.
We have a very serious drought out here, so draining 7000 gallons is not going to happen.
One change: it now has a blue "solar" cover on it (hides all the algae growing).
Aside from dumping a bit of bleach whenever I see mosquito larvae, it has no FC.
What are the odds that the CYA will dissipate?