CYA test actually worked!!!

[gocubs418]

I dumped in 4lbs of Stab and these are the results after two days:

100 - slightly cloudly, easy to see the dot still
50 - cloudly, barely see it, but still can
40 cloudly, really barely see it.
35 - if you look hard enough, you can see it.
30 - gone, but you know its there.

So what number should I go with based on those? PoolMath was dead on by the way. It said I needed around 8lbs to get to 75 CYA. I just wanted to start slowly.

Also, pH leveled out as well, intially it went too low, but now its hovering around 7.5-7.8. FC is the next issue, now that I have CYA, I wanted to hit it with Liquid Bleach.

My crew is coming out today to dump in 20lbs of salt, not sure if it will have any effect on Stab or Liquid Chlorine?

 

[BuckeyeChris]

If you stare at the ground for 5 seconds, then glance at the tube, can you see it? When you get to that point, round up to the nearest 5 for a little headroom.

 

[woodyp]

30 is close enough to use with an error range of +/- 10% of the test accuracy. Salt additions will not effect your CYA or FC. Hopefully it will effect FC when you fire up your SWG!

You can pour that sample back and forth a couple times and "second guess" your first reading too.

 

[gocubs418]

Excellent.... starting to own this pool chemistry! Thank you!!!!!

 

[gocubs418]

30 is close enough to use with an error range of +/- 10% of the test accuracy. Salt additions will not effect your CYA or FC. Hopefully it will effect FC when you fire up your SWG!

You can pour that sample back and forth a couple times and "second guess" your first reading too.

I actually did that.... same results.... just added 4lbs of stab and ~1/2 jug of Liquid Chlorine.... that would get me to around 4-5 PPM of FC and 70 CYA.

 

[Vickery]

Was that 20# or 200#? Pool Math show 251# so 200# would bring you up to 200ppm. But better to ease up to it than having to do a partial drain.

 

[gocubs418]

Was that 20# or 200#? Pool Math show 251# so 200# would bring you up to 200ppm. But better to ease up to it than having to do a partial drain.

He actually dumped in 80lbs of salt today, this would be his 7th bag. 280lbs total.