I just had 4 people in the pool for 2 hours. Lost 2ppm. It's a hot sun today... Algae will love it so boost that FC!
I hope someone responds about that spa. I know more about vinyl surfaces, so not a great helper. The surface ones look a bit like calcium and some effervescence from the grout.
I hope someone responds about that spa. I know more about vinyl surfaces, so not a great helper. The surface ones look a bit like calcium and some effervescence from the grout.