Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 10 of 10

Thread: CH levels for Vinyl pool

  1. Back To Top    #1

    CH levels for Vinyl pool

    After a reading from the local pool store, my CH was 120. The guy at the store says it's important to get it up to 200-250 range to protect equipment (especially heater). After reading the Pool School, it appears that my 120 is probably fine for a Vinyl pool. Is there any truth to the pool guy telling me I need a higher CH to protect my equipment?
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: CH levels for Vinyl pool

    The only reason to raise CH in a vinyl pool is to avoid any risk of voiding warranties on new equipment. The only risk to the heater is if your CH level is too high, which could cause scaling.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Re: CH levels for Vinyl pool

    Thanks Jason.....that's what I thought. So I'm not sure why he wanted me to raise the CH since it was already at 120. When I asked him why it needed to be higher, he mentioned equipment protection but perhaps I misunderstood his response. I'm not so sure I trust him now, since my CH is already 120 and he wants to get it to 200-250.
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: CH levels for Vinyl pool

    It is a common myth in the pool industry that CH is required to protect metal in the plumbing, such as inside the heater.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  5. Back To Top    #5
    dmanb2b's Avatar
    Join Date
    Apr 2009
    Location
    NY
    Posts
    3,728

    Re: CH levels for Vinyl pool

    perhaps he/she would have liked you to purchase some CH from the store?...just saying
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  6. Back To Top    #6

    Re: CH levels for Vinyl pool

    Quote Originally Posted by dmanb2b
    perhaps he/she would have liked you to purchase some CH from the store?...just saying
    the thought certainly crossed my mind
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

  7. Back To Top    #7
    TripleB4me's Avatar
    Join Date
    Jun 2007
    Location
    Maryland
    Posts
    224

    Re: CH levels for Vinyl pool

    Just an FYI...the manual for my heat pump says to keep the CH in the 200-400 ppm range or I may void the warranty. I have naturally high CH in my fill/house water, ~200 -250, so it's not a problem.
    20x40 IG Vinyl, 1.5 HP Whisperflo, Sta-Rite System 3 (300) Sq. ft Cart
    Intellichlor IC40 SWCG, 125,000 BTU Pentair heatpump, Polaris 280
    7' IG FG Spa, 2 HP Whisperflo, Pentair Dynamic III Cart (100) Sq. ft

  8. Back To Top    #8

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,085

    Re: CH levels for Vinyl pool

    There is copper piping in many homes and many water systems use or used chlorine at around 1 ppm FC or so with no CYA (so stronger than found in pools with CYA which is closer to 0.1 ppm FC equivalent with no CYA) yet the CH levels could be low such as 30 or 50 ppm yet do not cause serious corrosion issues. Yes, some water districts do use corrosion inhibitors (mine uses around 400 ppm phosphates), but not all do.

    The controversy regarding having water saturated with calcium carbonate to prevent metal corrosion is discussed here.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  9. Back To Top    #9
    TripleB4me's Avatar
    Join Date
    Jun 2007
    Location
    Maryland
    Posts
    224

    Re: CH levels for Vinyl pool

    Thanks for the info. If my CH weren't naturally high I would not add any calcium to the water to get to the recommended level. I do tend to keep my pH a little low, in the 7.2 to 7.4 range to keeping scaling in check.
    20x40 IG Vinyl, 1.5 HP Whisperflo, Sta-Rite System 3 (300) Sq. ft Cart
    Intellichlor IC40 SWCG, 125,000 BTU Pentair heatpump, Polaris 280
    7' IG FG Spa, 2 HP Whisperflo, Pentair Dynamic III Cart (100) Sq. ft

  10. Back To Top    #10

    Re: CH levels for Vinyl pool

    interesting stuff.........I suppose if for no other reason, I should try to keep my CH in the 200-400 range so my heater warranty will not be void. I just checked my heater warranty and sure enough, it states the CH range needs to be 200-400 to keep the warranty in tact.
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

Posting Permissions

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