Hi experts, I had a high cya issue (maybe 140) and I drained about 70-80%. Now I'm refilling and I'd like to know what to focus on first, second, third, etc. Refil is coming from city from my three hose bibs. I'll test as soon as it gets fill but curious what I tackle, in what order. Appreciate the help. Will post numbers as I get it filled. I've never done a drain and refill so I don't know how long it's gonna take.