Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: No chlorine registering in my small ag pool, what to do?

  1. Back To Top    #1

    Join Date
    Jul 2016
    Location
    Bevelry
    Posts
    4

    No chlorine registering in my small ag pool, what to do?

    I have a small ~1,700 gallon pool. I have only had it up and filled since Sunday. I have a floater in it with 3 1" chlorine tabs (which I have replaced 3 times now). Initially after the first day I got a chlorine reading. Now the last two days my testing (on both test strip and 2-way test kit) show no chlorine in my pool. Not quite sure what to do.
    12'x30" ag pool ~1700 gallons, 530 gph filter pump

  2. Back To Top    #2

    Join Date
    Jun 2016
    Location
    Boston burbs, MA
    Posts
    45

    Re: No chlorine registering in my small ag pool, what to do?

    Welcome to TFP! I'm sure the experts will come along any minute to give you some help, but in the meantime you may want to read up on Seasonal Pools in Pool School... And if you happen to be running out to the store later, grab some plain old bleach.

    Pool School - Guide for Seasonal/Temporary Pools

    Good luck!
    Rhonda
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

  3. Back To Top    #3
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,089

    Re: No chlorine registering in my small ag pool, what to do?

    Once your chlorine drop to zero and stuff starts growing it will consume chlorine quickly. The floater just can't deliver chlorine fast enough to keep a pool chlorinated.

    You need to switch to bleach or liquid chlorine (same stuff) to get the chlorine in the water quickly enough.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  4. Back To Top    #4

    Join Date
    Jul 2016
    Location
    Bevelry
    Posts
    4

    Re: No chlorine registering in my small ag pool, what to do?

    Quote Originally Posted by JohnT View Post
    Once your chlorine drop to zero and stuff starts growing it will consume chlorine quickly. The floater just can't deliver chlorine fast enough to keep a pool chlorinated.

    You need to switch to bleach or liquid chlorine (same stuff) to get the chlorine in the water quickly enough.
    Thanks! How much bleach should bleach should I put in?
    12'x30" ag pool ~1700 gallons, 530 gph filter pump

  5. Back To Top    #5
    JesseSchmidt's Avatar
    Join Date
    Jun 2015
    Location
    Fairfield Twp, OH
    Posts
    206

    Re: No chlorine registering in my small ag pool, what to do?

    Just a splash over 2 cups of 8.25% bleach will take you from 0ppm to 7ppm in that small of a pool. Get whatever bleach is cheapest but not splash-less, scented, outdoor or any other specialty bleach. Just plain old Clorox or store brand bleach. Check out PoolMath at the top of the page to figure out dosages. Head over to Pool School and do some reading. With your FC reading zero a few times, it's a good idea to SLAM your pool. The FAS-DPD chlorine test that is in the TFTestkits TF-100(link in my signature) or Taylor K-2006C(available from Amazon) is needed to be able to measure that you are at shock level. I'm not sure whether SLAM's are even recommended on a pool that size but I'm sure someone who knows will chime in soon!

    Pool School - ABC's of Pool Water Chemistry
    Pool School - Recommended Pool Chemicals
    Getting Started
    26k Gal IG vinyl, Hayward Super 1HP, Hayward Pro Series S244T Sand Filter, TFTestkits TF-100 w/ Speedstir
    Links: TFPC for Beginners / ABCs of Pool Water Chemistry / GETTING STARTED / PoolMath / SLAM / TFTestkits / Chlorine/CYA Chart

  6. Back To Top    #6

    Join Date
    Jul 2016
    Location
    Bevelry
    Posts
    4

    Re: No chlorine registering in my small ag pool, what to do?

    I have been doing what was recommended. I get liquid chlorinated and have been adding 2 cups at night and still the next day no chlorine showing up. My Ph was in the 6.8 range so last night I added another 2 cups of chlorinatoe and 2.7 ph up (as amount indicated on bottle). Checked levels this morning. PH seems to be in range chlorine zero. Added another 2 cups of chlorinator. Just tested now (4 hours later) chlorine still at zero. It's hot and sunny but I'm at a loss. Not sure what the heck I should be doing to maintain any level of chlorine in my tiny little pool. Just added another 2 cups and put the floater with tablets back in.
    12'x30" ag pool ~1700 gallons, 530 gph filter pump

  7. Back To Top    #7
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: No chlorine registering in my small ag pool, what to do?

    When you FC is below minimum for your CYA FC/CYA Chart bacteria and algae grows at rapid rates and consume your chlorine even fwter. You have to maintain the chlorine level above minimum at ALL times. Now, the FC is getting used up faster by the algae and bacteria you gave to add it more often. The way to maintain chlorine in a pool is to test and add more as often as needed. The more time it spends below minimum the more frequently you need to test and add more. If you don't go have any CYA in the pool then the sun will also quickly oxidize your chlorine.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  8. Back To Top    #8
    wjr75's Avatar
    Join Date
    Jun 2013
    Location
    IL
    Posts
    816

    Re: No chlorine registering in my small ag pool, what to do?

    Without any CYA the sun will eat up your chlorine really fast. Might want to try the dichlor method used in the spa start ups to adding chlorine as it will also add some CYA to buffer it.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •