I have a kidney shaped pool size: 12 x 20 x 26 Depth: 3 1/2ft x 6ft. I am advised it is 12,000 gallons of water but not sure it if is correct. I have a vinyl liner, Hayward pro-grid vertical DE Filter, automatic chlorine feeder.. I disconnected the heater and repiped the plumbing to override the heater. I emptied the pool twice and the copper is still high. How can I get the copper below the 3 reading. I also notice the bioguard maintain shock states is has copper in it. Could that cause the issue also.