- Jul 5, 2012
- 160
fyi:
I just redid the OTO test, twice, and it is reading a very light yellow and still a 1. ????
I just redid the OTO test, twice, and it is reading a very light yellow and still a 1. ????

linen said:Sorry about that UWVUnderWaterVanya said:She did use it. And got a result of only 1ppm (FAS-DPD said 3ppm) which doesn't fit the expected brown color for OTO.![]()
guardwife2 said:fyi:
I just redid the OTO test, twice, and it is reading a very light yellow and still a 1. ????![]()
guardwife2 said:Its the K 1000 kit from the TF100 and I just got it a few weeks ago..so it should be good. Ive kept it in the house so it is not out in the heat or garage. No bleach left and I had just got the bleach a few days before adding it to the pool. It's the same bleach I was using the first go around with my original post and it came from a dollar store b/c it is cheaper....it was a generic bleach. I have used clorox in the past though but it is more costly.
Just did an OTO test wih about 20% volume of bleach in the view tube. The results were not what I expected. The reagent coagulated into light orange bubbles with the liquid relatively clear. I estimate the ppm to be in the 12000 range.UnderWaterVanya said:Try putting that much in with the suspect bleach and testing with the OTO (color match) test. If that gives a deep yellow/orange/brown record it (take a picture if possible) and then go on to test with FAS-DPD. If it is only pale yellow - don't bother with FAS-DPD.
Then you repeat the test with more pool water and another 8ml taken from a fresh bottle of 6% Clorox which is a trusted name that most people think works quite well - normally not required but likely to be fresh and strong. Post results here.
I hear ya but I think the progression will be somewhat the same throughout descending ranges. I once went very high (in the 40 to 50 range. The results were somewhat similar. Some big globules form before shaking but turned brown when shook. I don't think any yellow will show itself with Ultra high Chlorine levels.jblizzle said:@ yeggim ... thanks for trying that, but you are still way beyond astronomical levels for FC. There was a chance guardwife2 was up to 100-200ppm ... so you are still over a factor of 10 too high.
guardwife2 said:Im pretty sure the bleach was 6% that is why I bought it at the dollar store b/c it was the same strength as the store brand or clorox. but I can recheck by getting one out of the trash and looking again. The lady at the store gets trucks in weekly and has a ready supply b/c she has people come in and buy the bleach for their pools too. I usually get the cases of it..usually 25 bottles at a time. None of the bottles are dusty, they are clean and new. She is right next to the pool store and says she has people go to the pool store and then to her store to get chlroine so she keeps plenty in stock. I did a retest with the fc/cc/cl one scoup and it turned pink. The FC was 2.5 and the CC was .5 and the OTO Cl was .5..it is a real pale yellow now. BUT we took the stairs out and YUCK!!! was there stuff in it and on it. thick green stuff. and we brush down the sides and floor. stuff is really floating now. It doesnt' look like dirty swamp water now it is still a green but lighter green. The pool is in full sun..has been all morning so im hoping with still ZERO cya and full sun it is eating some of the chlorine off.
PS...before prior to posting on this site when we were trying on our own...we put liquid shock at 12% in and the CL/OTO test did get a very dark orange...so I know the colors you are talking about however, this did not happen with this test at all..it has been light to pale yellow.
guardwife2 said:It might but I could smell bleach in it and if it got onto your clothes it bleached it out and after I added all of the bleach into the pool we were getting a bleach smell so I do believe it had bleach in it. ? as for the ladder I think we will keep it out till we get the algae under control or gone. I just looked at the temps to come and we are dipping down into the 50s at night and after today will have low 80s and some 70s. I do think our swimming season is coming to an end. My only hope now is to get it clear or clearer to close...not swim in.