I recently came back to the homestead when my father passed & my mom needed care. I have a L shaped pool. I just replaced the sand filter & new hayward pump. I would like to know what order should you add Chemicals? And they timing in between I just opened the pool on Memorial day and all my levels are low. The Ppm confuses me as well oh I am i central n Ohio
It has been 80 low 90s the last 2 days here.
Any advice welcome

Anastasia