Anyone have an opinion between these two testing methods/tools for CYA? On the left is the familiar tube sold by TF Test kits and the right is the Gucci version I purchased in attempt to deal with my CYA testing anxiety.
The small tube uses less chemicals/water but it uses a LOT less reagent as a ratio to water than the large the tube. With the large tube, you fill to A with pool water and then B with CYA test reagent so you end up with the same, or possibly more reagent than water.
With the large tube I feel like I can be consistently and confidently read when the dot disappears, but it consistently tests 10 ppm less CYA than my test with the small tube approach. Sometimes the small tube test confuses me and I have uncertainty about the result, possible due to water condition and variance in ambient lighting. I think the large tube might mitigate that some. Right now I get 40ppm with the small tube and 30ppm with the large, but I do not seem to be burning off chlorine faster than expected and I am still in SLAM, but almost done. I might do my first overnight test tomorrow. 40 would be ideal for me as the sun is not so intense and I want to ride tablets out to 50 after my SLAM is finished.
Thanks in advance.
The small tube uses less chemicals/water but it uses a LOT less reagent as a ratio to water than the large the tube. With the large tube, you fill to A with pool water and then B with CYA test reagent so you end up with the same, or possibly more reagent than water.
With the large tube I feel like I can be consistently and confidently read when the dot disappears, but it consistently tests 10 ppm less CYA than my test with the small tube approach. Sometimes the small tube test confuses me and I have uncertainty about the result, possible due to water condition and variance in ambient lighting. I think the large tube might mitigate that some. Right now I get 40ppm with the small tube and 30ppm with the large, but I do not seem to be burning off chlorine faster than expected and I am still in SLAM, but almost done. I might do my first overnight test tomorrow. 40 would be ideal for me as the sun is not so intense and I want to ride tablets out to 50 after my SLAM is finished.
Thanks in advance.
