I started testing my cya last monday and found out it was 30ppm, so I put in 6 lbs 11 ounces of stabilizer (sock method) tonight i tested it and its 30ppm. So I lost everything to back washing, oh i just remembered we had a terrible storm last night and i had to empty gallons of water.
I need to start over, the ironic thing is the water is crystal clear. My chlorine is only 2 ppm. Do I need to shock if the water is looking good or just add some to bring it up?