New pool owner trying to understand test strip reading

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TinFoilHat said:
All you do is squirt a bit into the tube and glance. Then squirt more and glance again. It is low. Get yourself a couple of lbs of granular CYA and put it in a sock in front of one of the pool returns so it can dissolve. You can squeeze the sock to help it along. Give it 24 hours before you test it again.
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Yes I did that. But the black dot only went away if I squirted harder and bubbles formed. It sounds like we have low stabilizer if it didn’t blur.

I have skimmer socks. I’ll use pool math and see how much to add. Thanks.
 
TinFoilHat said:
Get yourself a couple of lbs of granular CYA and put it in a sock in front of one of the pool returns so it can dissolve. You can squeeze the sock to help it along. Give it 24 hours before you test it again.
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It is low. BUT DO NOT ADD ANYMORE RIGHT NOW. LET'S DO THE OCLT TONIGHT. Adding more now will make slam harder.
We want to rule out algae before you add more CYA.
Link-->Overnight Chlorine Loss Test
 
We don't want to raise CYA until after we do OCLT. Higher CYA makes SLAM harder and more expensive.

Did you add it?
How much did you add in ppm?
How did you add it?
 
PoolStored said:
We don't want to raise CYA until after we do OCLT. Higher CYA makes SLAM harder and more expensive.

Did you add it?
How much did you add in ppm?
How did you add it?
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I did not add stabilizer yet. Was going to add it to a skimmer socks and about 2 pounds. But I will wait. Added the muratic acid about 45 min ago. Now adding two bags of salt. Then I’ll do my first test for the overnight test
 
WHEW!

Great! Fingers crossed. Print out the OCLT directions and follow them. Tests must be AFTER sunset and BEFORE sunrise. Use weather on your phone for the times.
Run pump 24/7, or at least 30 minutes before the tests.
 
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