I cannot keep chlorine in my pool. I added ProTeam Mustard and Black Magic 12 OZ, a double dose last Friday. Now I cannot keep a chlorine level, added about 20 pounds of chlorine since Friday.
FC 1.2
TC .7
Combines chlorine -0.5
PH 6.9
Hardness 20
Alk 110
Cyan Acid 100

Pool Store said to add 15 oz of PH up, 30 pounds of calcium up and 1 1/4 bag of super chlorine followed by microflock.
What do you think. I am beyond frustrated. HELP

Oh yea, I forgot, we have something on the bottom of our pool-brown puddles which appear to vacuum up easily but then reappear the next day!