What The... Dichlor/bleach? - Hot Tub Water Chemistry - Pool and Spa Forum

Jump to content


(July 17, 2014) POOLSPAFORUM.COM SITE UPGRADE!


Photo

What The... Dichlor/bleach?


  • Please log in to reply
3 replies to this topic

#1 therubberduck

therubberduck

    Newbie

  • Members
  • Pip
  • 5 posts

Posted 17 May 2011 - 02:02 PM

I have a 2010 HS Jetsetter with ozone. I recently switched to the dichlor/bleach method. Used dichlor for 2 weeks. Last night I shocked to 10 ppm chlorine with bleach. Checked FC today and it was .5 ppm. Is this normal, shouldn't I have a max of 50% chlorine demand. Is the ozone doing this?

BTW, I'm using a Taylor Test Kit.

#2 Itchy and Scratchy

Itchy and Scratchy

    Spa Savant

  • Members
  • PipPipPip
  • 133 posts

Posted 17 May 2011 - 02:48 PM

A few things:

How old is your fill water?

What was your chlorine demand at the beginning of the fill?

Sounds like you are at 95% chlorine demand. Your tub is likely contaminated. I would recommend following nitros decontamination procedure.

#3 Hillbilly Hot Tub

Hillbilly Hot Tub

    Certified Tech

  • Moderators
  • PipPipPipPipPip
  • 1,282 posts
  • Gender:Female

Posted 19 May 2011 - 11:50 AM

A few things:

How old is your fill water?

What was your chlorine demand at the beginning of the fill?

Sounds like you are at 95% chlorine demand. Your tub is likely contaminated. I would recommend following nitros decontamination procedure.

or you may have had a lot of CC, High chlorine demand does not always mean you need to decontaminate. If you do not use enough chlorine for your personal bather load and chlorine demand, over the week, the CC will build up, this is when the chlorine is working on oxidizing, not sanitizing, giving a low free chlorine reading. What was the CC reading. Shock it again to 10 and see if it comes back to normal, or you can try MPS to shock with.
Moderator
Spa and Sauna Sales and Service center
Clearwater and Great Lakes Spas
Helo and Almost Heaven Saunas
Spa Search certified dealer
APSP Member
CPO

#4 bdubya200

bdubya200

    Spa Savant

  • Members
  • PipPipPip
  • 212 posts

Posted 20 May 2011 - 04:41 PM


A few things:

How old is your fill water?

What was your chlorine demand at the beginning of the fill?

Sounds like you are at 95% chlorine demand. Your tub is likely contaminated. I would recommend following nitros decontamination procedure.

or you may have had a lot of CC, High chlorine demand does not always mean you need to decontaminate. If you do not use enough chlorine for your personal bather load and chlorine demand, over the week, the CC will build up, this is when the chlorine is working on oxidizing, not sanitizing, giving a low free chlorine reading. What was the CC reading. Shock it again to 10 and see if it comes back to normal, or you can try MPS to shock with.



Thank you for that info HHT. THats not something I would have considered in a similar scenarion. Its nice that you are helpful and knowledgeable and can offer up some experienced insight into these situations.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

website security