As far as I can tell i have all my chemicals right were they need to be.
CH-somewhere between 260(fill water hardness) and 400.waiting for the mixer to come to get an exact one
The swirly streaks and light color dots have been there since i bought the house 7 years ago. Pool company told me it was metals and they actually did a treatment last year which helped alot. My real concern is the 2 black dots that can be clearly seen. They are perfectly round and seem to be smooth to the bottom of the pool. I swam down the other day and felt them. Nor do they rub away with my finger. Any idea what they might be?