Hello all,
I have a question about the CYA test. I know it's a little subjective, but I want to make sure I'm doing this correctly.
After mixing the solution (1/2 pool water, 1/2 reagent), I hold the tube with the black dot at waist level and add the solution until the dot disappears. My issue is that as I'm adding, I think the dot disappears but then I stop adding, and as I'm looking, I think it reappears. So I add a few more drops and repeat.
The last test I did, I was at 45 so I rounded to 50 and have been chlorinating my pool at that level. We haven't had any rain here, so I've had to add quite a bit of water over the last couple of weeks, and I noticed that my chlorine tests haven't been as consistent - I would bring it to 8 ppm and it would drop to 5 or 6 quickly, but then stay there. I did the OCLT and it was zero, the water is clear and I have 0 CC so I don't think there is any sort of algae or anything. I assumed my CYA was lower than 45, so I tested it and when the dot first disappears I'm somewhere around 35-40, but to get it to "stay disappeared", I'm closer to 25. So in the first instance, I need to chlorinate as if I'm 40 ppm and the second, I probably need to add a little stabilizer and assume I'm at 30 ppm.
I have some new test strips and I tried one of those, it came out as "low" but I don't want to put too much faith in those, either.
Is it worth taking a sample to a pool store? I have no idea how accurate their testing is for CYA.
I have a question about the CYA test. I know it's a little subjective, but I want to make sure I'm doing this correctly.
After mixing the solution (1/2 pool water, 1/2 reagent), I hold the tube with the black dot at waist level and add the solution until the dot disappears. My issue is that as I'm adding, I think the dot disappears but then I stop adding, and as I'm looking, I think it reappears. So I add a few more drops and repeat.
The last test I did, I was at 45 so I rounded to 50 and have been chlorinating my pool at that level. We haven't had any rain here, so I've had to add quite a bit of water over the last couple of weeks, and I noticed that my chlorine tests haven't been as consistent - I would bring it to 8 ppm and it would drop to 5 or 6 quickly, but then stay there. I did the OCLT and it was zero, the water is clear and I have 0 CC so I don't think there is any sort of algae or anything. I assumed my CYA was lower than 45, so I tested it and when the dot first disappears I'm somewhere around 35-40, but to get it to "stay disappeared", I'm closer to 25. So in the first instance, I need to chlorinate as if I'm 40 ppm and the second, I probably need to add a little stabilizer and assume I'm at 30 ppm.
I have some new test strips and I tried one of those, it came out as "low" but I don't want to put too much faith in those, either.
Is it worth taking a sample to a pool store? I have no idea how accurate their testing is for CYA.
