Quote Originally Posted by poolbee
Thanks. I have a vinyl pool so calcium isn't a real problem for me. I have an AutoPilot Digital 220 swg. The AutoPilot rep had me on boost all day yesterday after he added the CYA.
Good idea since it takes about a week for the CYA to dissolve and your FC to start holding in the pool. Monitor your chlorine levels and turn down the output as the CYA dissovles. You will see the FC levels start to go high and stay there.
My pool is 21,000 gallons according to the rep. Also, AutoPilot recommends CYA of 60-80.
The majority of SWG manufacturers do.
Do you shock whenever there is CC present and do you base your amount of shock on the CC reading or only on the volumn of the pool?
If you have a CC over .5 ppm that does not go away in a day of normal run time for cell then shock with bleach. Saves wear and tear on the cell. For a CYA level of 60-80 ppm shock to FC of 20 ppm. This would be about 6 gallons and 1 quart of ultra bleach for your pool. You will probably never have to do this once everything is set up.