Blue Devil CYA test

jmcmd1980 · Apr 6, 2024

I was looking for an alternative to the Taylor CYA test, and ordered the blue Devil test. So far, I found this to be worse than the Taylor test. You need to use a lot of reagent for each test, the scale is not very informative, and I always seem to get a reading of 30 or 40, knowing I have more CYA in my water than that.

Anyone else have any experiences with this test?

Jim

ajw22 · Apr 6, 2024

Anybody tried the blue devil CYA test kit

You fill it half and half, pool water and solution then slide the dot up and down the tube. Perfect for those of us who cant make a dicision. I had one a while back then lost it. .. https://www.amazon.com/gp/product/B00JDHOP8Y/ref=ask_ql_qh_dp_hza

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CYA test kits- fairly drastic result difference

Hi there. I just received my test kit from TF. I have been using the Blue Devil CYA test kit (with the aggitating stick attached to the test vial)up until this morning. It has been giving results between 35-40 for the past 3-4 tests as I continue to balance my water. I used the TF CYA test...

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Jimrahbe · Apr 6, 2024

Jim,

I like the Blue Devil (Sliding Dot) kit better than the ones that are in my TF-100 and now the TF-Pro Salt.

That said, they are all very subjective.. More like a shotgun, where close is close enough..

I think the key is to find the one that works best for you, and try to run the test the same way each time.

Thanks,

Jim R.

jmcmd1980 · Apr 7, 2024

Jimrahbe said:
Jim,

I like the Blue Devil (Sliding Dot) kit better than the ones that are in my TF-100 and now the TF-Pro Salt.

That said, they are all very subjective.. More like a shotgun, where close is close enough..

I think the key is to find the one that works best for you, and try to run the test the same way each time.

Thanks,

Jim R.

Thanks for the reply, I think the Taylor test works best for me and is much more reliable. The blue Devil test always seems to read low in the 40 range no matter what I put in and the scale seems much more difficult to interpret as I’m aiming for the CYA 70 level.

I read the other attached previous discussions on this and get a sense of where to go.

Thanks again,

Jim

ngc4900 · May 7, 2024

Is the blue devil reagent interchangeable with the Taylor R-0013 agent?

Scoop · May 8, 2024

The 2 Reagents aren't compatible if the Taylor 4088 "moveable dot" test Tube is used with the Blue Devil Reagent.

I ran some comparison tests with both reagents a few years ago. The results are in these threads :

Pentair CYA reagent.

Does anyone know if you can use this stuff with the Taylor kit? Pretty good price for Canada. https://www.amazon.ca/Pentair-R161596-Cyanuric-Reagent-8-Ounce/dp/B008HYOAFC/ref=mp_s_a_1_7?dchild=1&keywords=r-0013&qid=1621522655&sr=8-7

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CYA Testing Indoors vs Outdoors - Water Temps

Location : Dallas area, Tx It's been a few years since I tested CYA in/outdoors, water temps, etc so I decided to repeat the tests to see my results. I switched to Indoor Testing July '20 after numerous testing showed that the differences between Outdoor Testing, on a clear day around Solar...

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