Recent content by Prickly

  1. Prickly

    Poolsmith CO2 injection for pH control

    My TA has crept up as well. It has increased by at least 10 ppm since I started using CO2
  2. Prickly

    Help! Diarrhea in above ground pool

    It can cause vomiting, but that isn't typical. It usually causes predominantly diarrhea that lasts for 1 to 2 weeks in healthy people. Public pools do have to treat all diarrheal incidents as though they are crypto to be safe but based the info you provided it is not the likely culprit.
  3. Prickly

    Help! Diarrhea in above ground pool

    Cryptosporidiosis doesn't typically cause vomiting. It was more likely a virus (norovirus or rotavirus). These viruses are inactivated by regular chlorine levels.
  4. Prickly

    Robots look awesome.. but really needed?

    I used a cordless vac (pool blaster) last year and upgraded to a robot thuis year. I'm so glad I did. I didn't like having to get in the water to vacuum (especially at the deep end). The vacuum wasn't long enough to do it from the deck
  5. Prickly

    Poolsmith CO2 injection for pH control

    I haven't had any issues with it yet. I'm running it on saver mode at 1 CFPH and it's keeping my pH steady between 7.5 and 7.6. I'm happy. I suspect my use will go up once it's summer and the cover is off more and the kids are splashing around.
  6. Prickly

    Turnover Myth

    Operators are required to test manually alongside ORP here as well. If measuring ORP alone you could end up with some pretty wacky FC and pH levels. I think the ORP requirement is good to have for public pools though (even if it does have its weaknesses) because without it, I think it would be...
  7. Prickly

    Turnover Myth

    The contradiction in those two graphs does make an interesting point. It seems correct to say that ORP sensors become useless at high CYA levels. Perhaps that's the rationale behind the 50 ppm max allowed CYA in the province where I used to work. The max really wouldn't be necessary for other...
  8. Prickly

    Turnover Myth

    My panel allows for 1% increments above 5. I'm definitely not going through anywhere close to 1 ppm a day. I can leave the generator off for a day right now and not see a measurable drop in FC. My hot tub other hand goes through at least 1 ppm a day...
  9. Prickly

    Turnover Myth

    I just have a solar cover as well but I find it reduces the chlorine loss a lot when it's on. My pool is pretty small (just 8400 gallons). It is also fiberglass, which may account for a lower chlorine demand.
  10. Prickly

    Turnover Myth

    No, not a typo. Is your pool covered? Mine is covered when not in use. I have low sun exposure with pine trees and my yard backing onto a hill. In the summer I will increase it to 15 or 20% with a longer run time but that's where I'm at now.
  11. Prickly

    Turnover Myth

    To say that sanitation is sufficient if algae is not present is a bit of an oversimplification. I don't know what the CT value is for algae (since it's not a microbe of public health importance I'm not aware of it being studied) but the CT value for Giardia for example is 62. If you are running...
  12. Prickly

    Turnover Myth

    That video is horrifying!
  13. Prickly

    Poolsmith CO2 injection for pH control

    Have you had cold weather lately? I believe that can cause the pressure to drop quite a bit
  14. Prickly

    Pool temperature and FC?

    It sounds like you are managing it well. If you were manually chlorinating I might have recommended a higher FC level to give you some buffer room if you encounter a high bather load but since your disinfection is automated and ORP is on target your FC level is definitely adequate.
  15. Prickly

    Turnover Myth

    This paper illustrates the point I was trying to make which is that the higher your CYA to FC ratio goes, the higher the risk of infection gets. I agree that the TFP levels are an improvement over health regs in most (but not all) jurisdictions. If they would adopt TFP levels in my current...