Quote Originally Posted by PoolDoc View Post
Brush-able brown spots can be mustard algae, or can be dirt being forced through the filter. Persistent brown spots are often iron stains.

Steps to follow:

1. Get a K2006 kit; to manage either algae or iron . . . or your pool, you need accurate testing. => http://pool9.net/tk/

2. Do the DE test to see if your filter is 'leaking' -- this is a VERY common problem on AG pools with BIG pump and little filters. => http://pool9.net/de-test/

3. Test your stains or dirt to identify what they are. http://pool9.net/stains-id

4. Make sure your chlorine is high and your pH is between 7 and 8: you do NOT want to get algae or have other problems while you solve this one!

5. Report test results once you have them.


And, welcome! Membership upgraded!
thanks so much! I will update soon.
Before I posted here I took my water sample to the "pool store", my print out said the alkalinity was 0, and pH was 6.9. I told the guy up front that I only wanted water tested and paid $10,he didn't try to sell me anything.
Thanks again