Hello. We just got a new pool from Walmart- 18'x48" Intex above ground. We filled it with water from our drilled well, which contains sulfur and iron, calcium, and magnesium. My wife took a test sample to a pool store and had it tested and they gave her a bunch of chemicals. We first added a Metal Out substance. The next day, we added stabilizer, then shock. When I went out to add the algicide, I noticed the water was brown. I think the shock turned it brown. She took another test sample to the pool store, and they gave her a clarifier. We've been adding it as directed for probably 4 days, and it hasn't seemed to clear things up much at all. I've heard good things about Baquacil. I ordered some and it should be here in the next few days. My question is, is it ok to add Baquacil after I've already shocked it with chlorine, or is there something else I need to do first?