I have done everything possible to get rid of this stuff, that I know of anyway. Since following all the suggestions and using the BBB method I could not be happier with the results of my pool. It is very clear and shiny like I have never seen. I have used pantyhose in my skimmer baskets and have vacuumed to waste several times. Pool has been at shock level off and on for the past couple weeks to help kill everything. But after a couple hours or so after brushing and vacuuming this tan/brown stuff falls back into the same darn place in the pool everytime. I have to be careful when I vacuum because if I go to fast it just clouds up. It's only in a couple places in the pool.
My numbers are as follows:
CYA (Not sure-One pool store says 8, the other says 78) So I just assume its at 78 for now.
Iron, Copper, Manganese (They say 0)
Could this be Mustard Algae since it keeps coming back in the same place? I know it's not dirt because it turns cloudy when touched.
Sorry for the long post.