So I'm filling up my 15' X 42" Intex pool with water from my well and realized I have no idea about water treatment. I didn't plan this out, thought maybe just fill it up and drain it a few times would be okay but after reading online, I don't think it will be safe for my 4 kids. I don't have time to research and don't want to keep testing and adding chemicals. What's the best way to keep my water clean and clear?

-Nick