Recent content by Rflasck

Update three years later. At the end of my 2015 BA testing it appeared that the BA was not able to reduce my CYA below 300. I decided to stop the BA trial at that time and just use the pool while keeping all other pool chem levels in the optimal ranges. Now, after 3 years of only using bleach...

OK. Thanks guys! I'll just be thankful that (aside from a high CYA) everything is looking good. If anything changes (like an algae outbreak) I'll let you know. Thanks, Richard

Well, since this IS “the Deep End” forum where “Pondering the deep mysteries of pool chemistry? Plunge into the more technical aspects of pool care” is done, so…….. I’m trying to determine if my high CYA level is 1) lowering my chlorine burnoff to a normal level and 2) why I am algae free with...

My second question was whether about 2 to 3 cups per day of 8.4% concentrated Clorox bleach seemd reasonable for my 10K gallon pool with cool weather and low use. Any comments? Thanks, Richard

Interesting. In past years, I have used the No-Phos pool store stuff to keep my phosphates low. I cannot measure phosphate level myself, so I must rely on the pool store phosphate measurements. Historically, my phosphates have been very low (<100). Just before the trial started, the pool...

I started using liquid Clorox when I started the BA-CAR trial. In addition to the CYA results, I’ve noticed a few other “odd” things. I thought I’d ask here, unless you think I should start another thread. Prior to the trial, I used trichlor pucks. I had to run my FC up to 15- 20 ppm to...

None of the test equipment is “NIST traceable,” so the focus during the trial was on reproducibility, reliability, and looking for trends, rather than on absolute accuracy (which is unknowable with any great precision in any event since there exists no “gold standard” cross-check). The shaking...

Essentially, yes. 1) sample verified to be above 65 F 2) shaken for 30 seconds 3) rested for 60 seconds 4) shaken for 10 seconds 5) rested for a few seconds to let the bubbles dissipate 6) tester held at waist level, sun over left shoulder, column in in full bright sunlight 7) sample poured...

My final report on my BA-CAR trial: Background: My pool started with very high CYA levels. I had been using trichlor pucks and dichlor powder for years. I live in the Peoples Republic of Kalifornia (PRK). The state and my local water utility over the years have failed to plan for the routine...

Day 33 Today was partially cloudy. I decided to run CYA tests a) with an moderately overcast sky, and b) in full bright sunlight. With the moderately overcast, the CYA measured 600. With full bright sunlight, the CYA measured 360. My conclusion is that to achieve consistent accurate CYA...

One bag was added on Day 0. One bag was added on Day 6. One bag was added on Day 26. ALL conditions and parameters recommended by BA were followed. At the beginning of the trial, I was not accustom to using the CYA turbidity test. The tests during the first 4 days were done at...

Day 30 results: Still No Joy! Water clear, no algae FC=2.5 CC=0.0 PH=7.8 CYA=355 I'll probably end this trial at Day 36, unless there are encouraging results that suddenly appear. Richard

Day 29 results: Still No Joy 8^(( Water temp 68F Water clear, no algae FC=1.0 (adjusted up to 4.0 after testing today) PH=7.8 CYA=400 I re-ran the CYA test using just tap water (again) to ensure there was not something in the tap water causing high CYA readings with my 3:1 dilution...

Day 28 results: Still No Joy! Water clear - No algae FC=1.5 PH=7.6 CYA=340 Richard

Day 27 results: Still No Joy! Water clear - no algae FC=2.5 PH=7.7 CYA=360 Will wait a few days to publish updated graph. Richard