1st post: recurring brown dust on the pool bottom

[robbym70]

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

look again...10 bucks to test the water...yikes.

You are in good hands with pool doc and company now. Don't go back to the pool store...