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Thread: Our first pool and first Taylor test results - iron issues

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    Our first pool and first Taylor test results - iron issues

    Here is my humble journal entry so far

    Sunday 6/3
    pool filled approx. 70%
    added 3 cups bleach
    let sit over night without pump running

    Monday 6/4
    8am
    - Noticed iron reacted to bleach; no deposits on liner, just suspended iron
    - finished filling pool
    5:45pm
    - took first sample from middle of pool; glass jar down, then turned up
    - cleaned filter; wrapped in Viva heavy duty papertowel; turned pump on for first time
    - added 6oz HTH metal control per instructions
    - Test Results:
    --- FC 3.4
    --- PH 7.0 or less
    (sealed sample then left for 3 hour break for kids softball game same sample used for these)
    --- TA 325
    --- CH 300
    --- CYA unrecognizable
    10:30pm
    - turned pump off

    Im guessing the break in time really screwed up the last 3 test results. oh ya, and I'm headed out of town tomorrow for 2 days. Good thing the HTH Metal Control instructions say to keep the FC at low levels and wait a few days with normal pump routine before making any additional adjustments. My wife will turn the pump on for approx. 6 hours per day Tuesday and Wednesday. I will take and run a full spectrum Thursday evening; Wed night if I get home in time.

    Thoughts? Gripes? Complaints? Suggestions?

    Thanks guys!
    Intex 12'x30" AG round metal frame - new for spring 2013
    - 1900 gallons @ 28" water height
    - Intex Filter 603 - 530ghp
    - Taylor K-2006 test kit
    - Pool School "graduate"!
    - Northwest Pennsylvania - hard well water w/ iron - Full Sun!

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    Join Date
    Sep 2007
    Location
    Shoreview, MN
    Posts
    11

    Re: Our first pool and first Taylor test results - iron issu

    My personal thoughts on dealing with iron (I am on a well with a fair amount of iron). I have had two different Intex pools (15' x 36" & 18' & 48") as well as my current 18' x 33' AG permanent pool. I have always had issues with the iron 'rusting' in the water. I had a long conversation on the phone with a technical guy from a filter company that offered an 'iron' filter system. He said the best way to deal with the iron is to let it oxidize (rust) and filter it out of the water. Whenever I add a sifnificant amount of well water, I add a bunch of oxidizing shock (non-clorine shock), let the iron rust then run and clean the filter until the water is clear. Depending on your iron level, you may need to clean the filter every few hours of operation to start with.

    When I had the Intex pools with 100% new water every spring, the pool would look like orange soda after shocking until the filter had a chance to remove the iron. After that it was clear water for the rest of the season with out having to deal with any of the 'metal out' products.

    I would be interested in hearing other members solutions to iron problems.

    Happy swimming,
    Pete
    18'x33' AG, 1.5 hp pump, 120 ft2 cartridge filter, BBB method

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    Re: Our first pool and first Taylor test results - iron issu

    Thanks PoolPete!
    What make and model pump/filter are you using? The one that came with the pool is insufficient to deal with this specific issue. I've been juggling with the idea of buying the 1500gph sand filter that everyone seems to love.

    Anyone have a suggestion for a filter that works best for removing iron? Thank you!
    Intex 12'x30" AG round metal frame - new for spring 2013
    - 1900 gallons @ 28" water height
    - Intex Filter 603 - 530ghp
    - Taylor K-2006 test kit
    - Pool School "graduate"!
    - Northwest Pennsylvania - hard well water w/ iron - Full Sun!

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Our first pool and first Taylor test results - iron issu

    There are two forms of iron, iron grains and dissolved iron. A conventional filter can remove iron grains but will not remove dissolved iron. Iron grains are small bits of iron, which tend to come off of iron surfaces as they rust. They are common when the pool is filled from a fire hydrant and also present in well water in some area.

    Occasionally sequestrant will cause dissolved iron to precipitate as iron grains that can be filtered out, but that is rare.
    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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    Join Date
    Sep 2007
    Location
    Shoreview, MN
    Posts
    11

    Re: Our first pool and first Taylor test results - iron issu

    When I went through this with my Intex pools, I found that the filter that came with the pool to be adequate to filter out the rust particles - you just need to clean it often. A cartridge filter (in most cases) will filter smaller particles than a sand filter and are quicker to clean although take more effort. I used cartridge filters for both my Intex pools and am using one on my current pool.

    Jason has a good point about different types of iron, I am assuming that my situation is dissolved iron because when I used a sequestering agent, it prevented the orange coloring when I used the oxidizing shock. If I shocked again a few weeks later with no more sequestering agent, it would turn orange.

    I guess the bottom line is if your water has already turned 'rusty', just keep running and cleaning the filter until the water is clear.

    Good luck,
    Pete
    18'x33' AG, 1.5 hp pump, 120 ft2 cartridge filter, BBB method

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    rickyislandgirl's Avatar
    Join Date
    Apr 2013
    Location
    Cedar Lake,IN
    Posts
    58

    Re: Our first pool and first Taylor test results - iron issu

    A couple of years ago I had a intex blue ring pool with Ice tea looking well water... I used a cotton sock filled with cotton socks on the return line to catch the rust it worked.. cleared the pool up in a week..
    10,400k, AG 21 round, 1.0HP Waterway pump cartridge filter. TF-100

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,077

    Re: Our first pool and first Taylor test results - iron issu

    As JasonLion says above, attempting to filter dissolved iron from a pool almost always is unsuccessful.

    The success some report is usually iron particles.....not dissolved iron.

    Dissolved iron in your pool can be "dealt" with through the constant application of sequestrants or replacing your pool water with new water that has no dissolved iron. That's a bit of an oversimplification but it is applicable in the VERY large majority of pools.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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