Re: Algae in otherwise chemically "balanced" pool (TA is off the chart)
Does the black dot disappear midway between 40 and 50? If so, use a CYA of 50 as the scale is not linear as you can tell from the gradations on the vial. Don't add more CYA now.
Use the non-SWG shock level for your slam so if CYA is 50, shock at 20FC.
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Also, most people just turn of their SWG during a slam.
Does the black dot disappear midway between 40 and 50? If so, use a CYA of 50 as the scale is not linear as you can tell from the gradations on the vial. Don't add more CYA now.
Use the non-SWG shock level for your slam so if CYA is 50, shock at 20FC.
- - - Updated - - -
Also, most people just turn of their SWG during a slam.