another CYA test question

bryanq480

Well-known member
Jul 16, 2020
64
tempe, az
Hi all
So when doing the test, back facing the sun and vile at waist level, I got that part.

When looking down at the dot, should it be in sunlight or in the shade?
As in, should the CYA vile be in the sun or shade?! It makes a difference and I am not sure the best way to do it
Thanks to all of you!!!!
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,097
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Shade of your body. You want indirect light.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,097
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40

bryanq480

Well-known member
Jul 16, 2020
64
tempe, az
amazing what pucks will do
i was at 20-30 PPM a little over a month ago so I used pucks while i was gone for 2 weeks and kept using as i knew my CYA was low for phoenix.
Neighbor and I kept track; as of today, have used 21 pucks! 8OZ 99% trichlor

It rained once and I back-washed twice. About time to get the 10% back out.
 

mguzzy

Gold Supporter
I love Marty's trick of just filling it to each line and seeing if you can see it.. 70, yup; 60 Yup; 50 nope... its 60! bing bing bing!

There I fixed it... I was standing on my head when I typed this post.
 
Last edited:

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,097
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Actually it goes the other way - 70 yup, 60 yup, 50 nope, Use 60. The scale goes up from bottom to top.
 
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