End of last summer I had:
This week I had:
CYA 0 (less than 20 anyway)
The Pool Calculator tells me I would have had to drain 70-80% to drop the levels like that. Could I really have lost that much or do I probably have a leak? I use a autofill system.
25,000 gal IG colored plaster pool, 6 years old w/ cartridge filter