The oclt needs to be done exactly as directed in the article- both tests in the dark & the swg off.
No more cya until you are sure you don’t need to do the
SLAM Process
BTW - “super chlorination” mode just runs the swg at 100% until the pump turns off or after 24hrs - whichever comes first. Which is roughly only .38 ppm of fc per hour in your pool. This is too slow & nasties proliferate in the meantime.
Also, If you don’t go back afterwards & change it back to normal operation mode it may not produce fc at all. You’re better off just setting it to 100% on regular instead.
From now on - When you are low on fc dose with liquid chlorine asap - then set the swg to maintain that. Don’t wait on the swg to play catch up.
It is a turbidity test.
You pour your mixture into the tube- if you have very high cya it will be very cloudy & the googly eye at the bottom will disappear from view quickly,
if you have lower cya it won’t disappear until you have filled the tube quite a bit .
Do this:
pour the liquid to a line and with the tube waist high just glance down into the tube, if you still see the dot go to the next line, glance, repeat until you don’t see the dot with a glance.
Don’t stare.
It’s best to do the cya test outdoors in bright sunlight. Back to the sun.
You can pour the solution back into the little squirty bottle & repeat the last part of the test as many times as you need to feel confident in your results.
That’s fine - they will almost never match exactly. It also takes the swg 24 hours to “calibrate” itself after being turned on the first time or after adding salt.