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

Thread: Nitrates????

  1. Back To Top    #1
    orthofish's Avatar
    Join Date
    Jan 2009
    Location
    Northern Middle Tn.
    Posts
    561

    Nitrates????

    Is it normal to have nitrates in a swimming pool?? I saw a thread where someone had a nitrate reading of 40. I don't even let my fish tanks get that high.
    Just wondering

    Thanks
    Lynn

    16x38 FG, 20,400G, 1HP/2sp Tristar pump, Hayward 425sq ft cart. filter, Pro Logic4, SWCG, 3 returns, 2 main drains, 1 skimmer, 4 Pentair deck jets, Hayward Phantom pressure cleaner/booster pump, TF-100 of course :-)orthofish-s-pool-build-finally-t13179.html

  2. Back To Top    #2
    Guest

    Re: Nitrates????

    Nitrates do occur in pools, usually from runoff of fertilizer into the pool but sometimes for the same reason they occur in aquariums. In a closed and anerobic pool bactieria can break down CYA into ammonia and urea and other bacterial can then convert the ammonia into nitrite and nitrate.
    The problem with nitrate is it is a primary algae food and can lead to algae blooms (which is why just eliminating phosphates doesn't always work).
    To eliminate nitrate you have to remove water and replace it with nitrate free water, just like an aquarium.

  3. Back To Top    #3
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Nitrates????

    I saw that post of 40 too. What is considered too high or unacceptable?
    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

  4. Back To Top    #4
    orthofish's Avatar
    Join Date
    Jan 2009
    Location
    Northern Middle Tn.
    Posts
    561

    Re: Nitrates????

    So if ones chemistry is right in the pool,ie FC, then there should not be any nitrates in the water, correct???
    Lynn

    16x38 FG, 20,400G, 1HP/2sp Tristar pump, Hayward 425sq ft cart. filter, Pro Logic4, SWCG, 3 returns, 2 main drains, 1 skimmer, 4 Pentair deck jets, Hayward Phantom pressure cleaner/booster pump, TF-100 of course :-)orthofish-s-pool-build-finally-t13179.html

  5. Back To Top    #5
    Guest

    Re: Nitrates????

    Quote Originally Posted by frustratedpoolmom
    I saw that post of 40 too. What is considered too high or unacceptable?
    anytihing above 0! Nitrates are not normally found in pools but are a lot more common than people think. However, like phosphates, they are not a problem in most cases.
    I must have missed that or didn't think anything of it since in most cases they are about as important as phosphates but I will make a wager that the post also had a borate listing since the only testing system that I know of that routinely tests for nitirates is the LaMotte WaterLink Express with the nitrate/borate upgrade. Aquacheck does make stand alone nitrate and nitrite test strips for pools but I doubt they would be used in a normal water test.

  6. Back To Top    #6
    Guest

    Re: Nitrates????

    Quote Originally Posted by orthofish
    So if ones chemistry is right in the pool,ie FC, then there should not be any nitrates in the water, correct???
    unless they have been added by fertilizer runoff or created under no chlorine anaerobic conditions such as a closed pool.

  7. Back To Top    #7
    orthofish's Avatar
    Join Date
    Jan 2009
    Location
    Northern Middle Tn.
    Posts
    561

    Re: Nitrates????

    Thank you Waterbear.
    Lynn

    16x38 FG, 20,400G, 1HP/2sp Tristar pump, Hayward 425sq ft cart. filter, Pro Logic4, SWCG, 3 returns, 2 main drains, 1 skimmer, 4 Pentair deck jets, Hayward Phantom pressure cleaner/booster pump, TF-100 of course :-)orthofish-s-pool-build-finally-t13179.html

Posting Permissions

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