Thanks!

I'm confused though because we added enough to get to 10 ppm (per the pool calculator) and it was only 7 this morning. Then it dropped all the way to 2 by this evening. It was a very hot and sunny day here in South MS. (Our swimming water temperature this evening was 90 degrees!)

Also, this might seem like a dumb question, but after we test, what is the best way to dispose of the tested water (with the added drops, etc)? We have a septic tank.

I appreciate all the advice!

ETA could it be that it needs to be shocked? We got a pool light and there are a lot of tiny dots floating in the water, that you can only see by the pool light (sort of suspended in the water). Matt has been changing out our filter every other day or so (rinsing the old one well & letting it dry, and swapping them out).