Hello

I have read the stickies and many of the posts, but just want to post my particulars before starting the ascorbic acid treatment, to see if anybody has any advice or pointers.

I have an orangy-brown stain around the liner of my pool.
My pool is a 20,00 inground with a vinyl liner. It is filled with municipal water and rain water and I am located in Massachusettes.

When I rub the stain with a sock full of vitamin C tablets it does clean-up.

My numbers (via Taylor test kit) are:

PH 7.6
FC 1.0
CC 0.5
Alk 90
CYA zero
Calcium Hardness 270

Should I begin the ascorbic acid treatment as outlined on the stickey? I did just add a little dry acid to try to drop the PH a bit (it is now 7.6 and I want to get it down a little before doing the ascorbic acid treatment)

Thanks - This forum is a GREAT resource!!!!!!!!!!!