Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Why not Cal-Hypo if Calcium Hardness is low?

  1. Back To Top    #1
    Guest

    Why not Cal-Hypo if Calcium Hardness is low?

    I'm wanting to raise my CH a little bit. Any problem with using small quantities of Cal-Hypo shock instead of bleach for a while?
    Any reason not to?

  2. Back To Top    #2
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Why not Cal-Hypo if Calcium Hardness is low?

    What is your CH level?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  3. Back To Top    #3
    Woodberg's Avatar
    Join Date
    Apr 2009
    Location
    Houston, TX (Candlelight Estates)
    Posts
    136

    Re: Why not Cal-Hypo if Calcium Hardness is low?

    That should be fine. You may want to brush the bottom of the pool just to make sure it dissolves all the way.
    20,000 gallon gunite pool, attached spa, Pebblesheen finish, Paramount PCC-2000 infloor cleaning system, Paramount ClearO3 ozone system, Intelliflo VS main pump, Whisperflo 1HP cleaner pump, StaRite cartridge filter, StaRite heater

  4. Back To Top    #4
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Why not Cal-Hypo if Calcium Hardness is low?

    First, What is your CH level?

    Edit: Based on a post you made on Monday, your CH level is 230 which is not low, it's just fine for fiberglass. End Edit.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  5. Back To Top    #5
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Why not Cal-Hypo if Calcium Hardness is low?

    Quote Originally Posted by Woodberg
    That should be fine. You may want to brush the bottom of the pool just to make sure it dissolves all the way.
    It depends on his current CH level.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  6. Back To Top    #6
    Guest

    Re: Why not Cal-Hypo if Calcium Hardness is low?

    My CH level is 220, so it's not real low. waterbear recommended getting it up a little higher due to my staining problems.

    I thought it might be a good opportunity to kill two birds with one stone. chlorinate and also get the CH up a little at the same time.

  7. Back To Top    #7
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Why not Cal-Hypo if Calcium Hardness is low?

    Then Cal-Hypo is fine. Use the "effects of adding chemicals" to determine how much the cal level will be raised with each addition.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

Posting Permissions

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