Recent content by Kermiter

Thanks for pointing me to that link. I repeated my test using both additional steps: 5 drops of 0012 before adding 0010, and using 8 drops of 0011L instead of 5 drops. The sample was then clear blue (same CH result as my previous run) with just a little bit of the "globs" floating on top. I...

Greetings! When I perform the TF-100 Calcium Hardness (CH) test, instead of the water turning clear blue, the solutions seem to "clump" together into tiny blue particulates in the sample and floating on the surface. Is this a normal result, or should the water be coming out clear at the end of...

Well, it could be user-error, too. I'm sure I'll get better at it with practice. I'm not biased against either test. I find the ColorQ easier to use, but my utmost desire is accuracy. I don't have enough experience to draw my own conclusion right now. Can the TF-100 experts let me know if...

Speaking of cross-check, I just started this thread on the subject. :)

Sorry, I was a bit ambiguous when describing my TF-100 chlorine test results. FC showed 4.0ppm using the TF-100 Chlorine Drop Test. It was between 3 and 5 (my best guess) using the color-match test kit that is also included with the TF-100. There's pre-Submit proofreading, and then there's...

I've been using the digital ColorQ Pro-7 pool tester for about a month (after getting a new PebbleTec surface). Based partly on this thread, I also purchased a TF-100 to compare the two and because I have heard it's more accurate, especially for CYA (stabilizer). For those who don't know, the...

Re: Confused about safe FC level: Chlorox vs. Chlorine/CYA C Hi, chem geek. I did see your comparison, which actually helped me decide on the lithium hypochlorite. I switched to it for my month-new PebbleTec surface because (other than cost) there don't seem to be any downsides compared with...

Re: Confused about safe FC level: Chlorox vs. Chlorine/CYA C Thanks again for all the great answers! Very helpful. I can use the ~10% rule of thumb and will examine the detailed "Deep End" report. :) RobbieH, in answer to your question, I have used both. I prefer the powder to the liquid...

Re: Confused about safe FC level: Chlorox vs. Chlorine/CYA C Thanks for the helpful replies! I will start keeping higher FC levels based on the Chart. Is there a formula to calculate the active chlorine (HOCl) level for a particular "CYA-adjusted" FC? For example, with CYA = 60 and FC = 6.8...

I'm sorry if this has been answered already. I've been searching for awhile without luck... Everything I've read in the Chlorine/CYA Chart thread makes a lot of sense. However, the Clorox Service Bulletin clearly states "Re-entry to treated pools is prohibited above 4ppm [available chlorine]...

I have been using a ColorQ for a month and have been extremely happy with it. It's reasonably priced, very well conceived and put together, and it's so much nicer get actual numbers versus the "approximation" of color matching. I'm not color blind, but I seem to have a hard time distinguishing...