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Thread: Brittle Thermometer rope after only 2 months in water

  1. Back To Top    #1
    el_steak's Avatar
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    Aug 2007
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    Brittle Thermometer rope after only 2 months in water

    Yesterday I went to check the water temperature in my pool and to my surprise, the white rope used to attached the thermometer snapped right off when I pulled lightly on it. I tried tying another knot, but the rope snaps off right away, with little to no force. I can actually break it in little pieces just by pulling with my 2 fingers. It's the "standard" pool thermometer type white rope (if there's anything like that).

    This got me concerned with the chemistry of my water. Is possible that something in there would cause that? Could this also affect my vinyl liner? or is it just a bad rope...

    The thermometer (and rope) are almost new and were in the water only for a month in the fall and 2 months this spring.

    I have a Taylor K2006 and here are my numbers:

    FC: 4
    PH: 7.6
    TA: 80
    CH: 250
    CYA: 80
    Salt: 3300
    Borate: 50

    I have a goldline SWG running ar 9% and my PH has been very stable since I added the borax. I did 2 shocks with dichlor bags at the opening of the pool and got the FC pretty high at 15-20 and I didn't have any CYA at that time. I also poured a gallon of acid in the pool when going to Borax, but I did it slowly, following the instructions in the stickie.
    14X24 ig vinyl pool 3ft-4 1/2ft deep - 7000 gal
    Aqua Genie skimmer and return - no main drain, 1 hp hayward pump, 27" Hayward filter with Zeobrite,
    Aqua Logic P4 controller + SWG, 2 lights
    192 square feet of solar panels controlled by P4, 5KW electric heater (just in case...)

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    JasonLion's Avatar
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    Re: Brittle Thermometer rope after only 2 months in water

    Yes, I had that exact thing happen with a cheap thermometer from Leslie's. The "rope" they include is not made of the correct material. You should replace it. I used fishing line, but there are several things that will work.
    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

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    el_steak's Avatar
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    Re: Brittle Thermometer rope after only 2 months in water

    thanks, I'm glad to see that the rope is the problem and not the water...
    14X24 ig vinyl pool 3ft-4 1/2ft deep - 7000 gal
    Aqua Genie skimmer and return - no main drain, 1 hp hayward pump, 27" Hayward filter with Zeobrite,
    Aqua Logic P4 controller + SWG, 2 lights
    192 square feet of solar panels controlled by P4, 5KW electric heater (just in case...)

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    ktdave's Avatar
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    May 2007
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    Katy, TX
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    Re: Brittle Thermometer rope after only 2 months in water

    Also had the same "rope incident" as you after only a few months in the water. They do use cheap stuff in those things.
    11,000 gal. gunite w/midnight blue and white pearl PebbleTec
    Intelliflo 4x160 pump
    Intellichlor IC-20 SWG
    Pentair cartridge filter 420 sq. ft.
    Mastertemp 400K BTU heater
    Legend Platinum cleaner
    Pool School
    JasonLion's Pool Calculator
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    AnnaK's Avatar
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    Re: Brittle Thermometer rope after only 2 months in water

    Yep, ditto. I don't tie my thermometer anymore. I just leave it inside the skimmer basket.
    AnnaK

    12,500 gal AGP, Hayward sand filter, Pentair 2-speed pump, timer.
    Please visit our Pool Issues pages for information about step weights, managing the solar cover, and PoolSkim.

  6. Back To Top    #6
    ktdave's Avatar
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    Re: Brittle Thermometer rope after only 2 months in water

    Quote Originally Posted by AnnaK
    Yep, ditto. I don't tie my thermometer anymore. I just leave it inside the skimmer basket.
    That's a good idea! Maybe my toddler won't see it, and not play with it, plus it will have the correct temp cause of circulation in the skimmer. BRILLIANT!
    11,000 gal. gunite w/midnight blue and white pearl PebbleTec
    Intelliflo 4x160 pump
    Intellichlor IC-20 SWG
    Pentair cartridge filter 420 sq. ft.
    Mastertemp 400K BTU heater
    Legend Platinum cleaner
    Pool School
    JasonLion's Pool Calculator
    TF Test Kits

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    AnnaK's Avatar
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    Re: Brittle Thermometer rope after only 2 months in water

    Self-defense.

    I don't have toddlers but I do have retrieving shepherds, a rare breed which tries to catch anything that swims, floats, bobs, flies, runs, crawls, slithers or motates in any other way. They've not yet discovered the thermometer inside the skimmer
    AnnaK

    12,500 gal AGP, Hayward sand filter, Pentair 2-speed pump, timer.
    Please visit our Pool Issues pages for information about step weights, managing the solar cover, and PoolSkim.

  8. Back To Top    #8

    Join Date
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    Re: Brittle Thermometer rope after only 2 months in water

    we live in the country - we use baler twine for everything!...I've used the same piece of orange twine for 3 years now...i also made it much longer so the themometer hangs about 3 feet deep...it was decieving when you read the water temp near the surface at 90, but 2 feet below that was 80...shocking!
    Using BBB successfully for over 5 years!

    16x32 vinyl grecian, Hayward EC65, 1hp super pump, Clear solar cover, Loop-lok winter cover, "The Pool Cleaner" 2 wheel suction cleaner

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