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  1. H

    CH Test Accuracy

    Your replies are helpful & have put my mind at ease . . . thanks very much!!
  2. H

    CH Test Accuracy

    Following the directions for testing CH using the TF 100 Kit, I noticed that when I add the 3 drops of R-0011L to the 10 drops of R-0010, the water turns a sort of pale pink, as opposed to "red". When adding the drops of R-0012, the water turns a pale blue. Is this within the normal range of...
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    Questions TF Test Kit Results

    Yeah, pH is 7.8. CYA is 70. Reagents probably are about 18 to 24 months old. Typically, what is "life span" of reagents? Given all this (figures & colors)does it seem more like reagents used for CH & TA are outdated? Many thanks.
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    Questions TF Test Kit Results

    Have used the TF 100 Test Kit for years, and trust its results. Never an issue until now. 1) CH test; adding R-0010 & R-0011L resulted in very light pink. Took 20 drops of R- 0012 to become a faint blue. Did test twice; same result. If this is accurate, it indicates my CH is about 500 ppm. How...
  5. H

    sulfuric acid v muriatic acid

    Again, many thanks. The Holiday Inn thing: . . . . good one!
  6. H

    sulfuric acid v muriatic acid

    Thanks for your help. I've got to ask: What's the connection between you not being a chemist & staying at Holiday Inn?
  7. H

    sulfuric acid v muriatic acid

    Thanks very much to all who replied; all very helpful. Would sulfuric acid contribute to cloudiness in pool, considering all other chemicals are in balance? When next I see this fellow, I was certainly ask. Thanks, again
  8. H

    sulfuric acid v muriatic acid

    I did, but couldn't find it. Thought I may have missed something, hence second posting.
  9. H

    sulfuric acid v muriatic acid

    Local pool guy says sulfuric acid is better to balance pH than muriatic acid. Never heard of this before, and am looking for comments from those who know a good deal more than I do about this sort of thing. Thanks very much.
  10. H

    sulfuric acid v muriatic acid

    The fellow who owns his own, local pool store mentioned that sulfuric acid is a better way to affect pH than muriatic acid. I've not heard this before, and have always used muriatic acid. My SWG needed cleaning, and I used muriatic acid, which seem to work just fine. But he said sulfuric acid...
  11. H

    Pool Math question

    Thanks very much for your replies. The muriatic acid I bought at Home Depot is, indeed, 31.45%, so the option used on Pool Math is the correct one. Again, thanks for your help.
  12. H

    Pool Math question

    Like Pool Math; use it all the time after I've tested pool chemistry using TF test kit. Just now it occurred to me that I may be doing something incorrect relative to pH measurement. On the line that mentions adding muriatic acid, there's several options, one of which indicates "31.45%-20...
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    TFTestKit, how to measure PH

    Like the graphics! Thanks for your replies. I thought as much, but also thought I should double check with those who know more than I do about such things. But another question: Will the R-0014 (Phenol red) go bad if it's been sitting outdoors, not in direct sunlight, for several months in hot...
  14. H

    TFTestKit, how to measure PH

    I've followed the directions for Weekly Tests and used Pool Math site to sum up results. The only figure I do not find how to measure on the Weekly Test directions, but that the Pool Math calculator asks for is PH. Am uncertain how to manage that. Should I get the PH figure using what's in the...
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    ?How to lower FC?

    Thanks very much for your reply. When it comes to buying stabilizer, our local Home Depot sells it, but the price seems a little steep. Would it be best to buy bulk (this, or any other chemical) on line?
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    ?How to lower FC?

    Live in south Florida. Pool is in-ground, 15 X 30; holds close to 20000 gallons. Use TFTest Kit 100 . Am having difficulty lowering FC. Have SWG that operates at 35%, and a variable speed motor that operates 8 hours daily at 3 different speeds. Figures on 10/8/2016 are as follows: FC: 11.5...
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    Henry M Better pH Test?

    Totally agree about the significance of Pool School articles!! I've had balancing issues for a while, but thanks to the information in Pool School & support from others in TFP, all seems to be well now. It takes some getting used to, but after only a few attempts, I think you'll find how great...
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    Henry M Better pH Test?

    Water is actually crystal clear. Although there is an indication of some green/yellow algae beginning to form in one small spot. Will read, again, Pool School. Any suggestions about algae?
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    Henry M Better pH Test?

    Thanks for clearing up my confusion. I was confusing MA with Cyanuric Acid. For testing FC I did put 10ml pool water in marked tube; added the DPD powder, and the drops of 0871 reagent until water cleared. But the directions I have indicates I should multiply the total "number of drops you...
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    Henry M Better pH Test?

    Thanks for your reply. I should have written FC not TA. In any event, I just finished testing pool chemistry again, using the TF-100 Kit; the Taylor K-1000 kit; and test strips. Results using the T-1000 kit: FC 6; CC 10. CH 350; TA 80; CYA 40. From Taylor K-1000: Cl 5-10 range; pH 8. Strips: FC...
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    Henry M Better pH Test?

    Am having similar pH issue. I've the TF-100 Test Kit. When I measure chlorine & pH using the Taylor Basic k-1000, it shows Cl Br at the 1-2 level, and pH at the 8.2 level. When I use the Test Kit, TA is at 60, and CYA is at 40. Maybe I'm not using the CYA View Tube correctly: I fill it until I...