You need circulation when adding chemicals. Drain 75%. Refill. Go though the shock process.
If you drain it all, then you need to actually add more CYA and will likely still need to go through the shock process.
Posted from my Droid with Tapatalk ... sorry if my response is short
If you drain it all, then you need to actually add more CYA and will likely still need to go through the shock process.
Posted from my Droid with Tapatalk ... sorry if my response is short