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Thread: New pool owner...bought house with in ground fiberglass pool

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    New pool owner...bought house with in ground fiberglass pool

    Previous owner was using tri chlor tabs in an automatic dispenser....and was using chlor brite to shock.

    I've had water tested using a computerized system, and my results are:

    Free chlorine: .15 ppm

    Total Chlorine: 1.63 ppm

    Combined Chlorine: 1.48 ppm

    ph: 6.9

    Hardness: 119 ppm

    Alkalinity: 85 ppm

    Cyanuric Acid: 250 ppm

    Copper: 1.6 ppm

    Iron: .29 ppm





    Upon reading info from pool school, I've realized that the previous owner has been adding CYA because he used trichlor tabs and chlor brite to shock....thus increasing CYA to these ridiculous levels.


    I know I'm not supposed to drain my entire fiberglass pool, or even go below the inlets when I drain, so I've started draining a couple of inches at a time and replacing water to mid skimmer level daily.

    I just added about 1 and 1/4 gallons of 6% clorox.


    Does that sound right? What should I do?

    Thanks for your help!

    Pool newb.

    P.S.: We closed on our "new to us house" on 6/28. Went for a swim that night that we closed....moved in on 6/30. Being a pool newb, I didn't realize the importance of monitoring the pool daily, so I didn't look in the automatic dispenser until about 7/4, and noticed the tabs were completely dissolved. I tested with strips on 7/5, and saw the FC levels were practically non existent, as they still are. By 7/9, both my wife and I have developed ear infections. I don't want to get back in the pool until I know it's safe, especially since we have our 9 month old swimming with us since we moved in.
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Re: New pool owner...bought house with in ground fiberglass

    Welcome to TFP!

    First off, you need to order you a good test kit that has a FAS-DPD chlorine test. The TF-100 at tftestkits.net is the best value out there.

    Good on you for reading Pool School. Keep reading it. It's good that you recognize that your CYA is way too high. Draining it a little at a time takes a while, but it is safer to do than draining all at once and risking folating your pool shell. You want it down around 30 or 40.

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    Re: New pool owner...bought house with in ground fiberglass

    Quote Originally Posted by 257WbyMag
    Welcome to TFP!

    First off, you need to order you a good test kit that has a FAS-DPD chlorine test. The TF-100 at tftestkits.net is the best value out there.

    Good on you for reading Pool School. Keep reading it. It's good that you recognize that your CYA is way too high. Draining it a little at a time takes a while, but it is safer to do than draining all at once and risking folating your pool shell. You want it down around 30 or 40.

    Thanks for the reply.

    I've got Aquachek Select test strips at the moment.....and they actually seem pretty accurate according to the computerized readings I've been getting at the local pool store.

    Caveat being: I went to one pool store yesterday, the computerized printout showed CYA level of 139 ppm. He recommended 2 pounds of shock, but didn't ask me what shock I was using, and me not realizing shock was a verb, and not a product (per pool school) used the chlor brite the former home owner left me. Later yesterday, I went to a different pool store to see what the results were. That store used a non computerized test (Leslie's pools)....and the result for CYA was 60 ppm....more than half off what the other pool store told me. When I asked how there could be such a discrepancy, another employee tested and said, "yeah...it looks more like 100".


    Today, I went back to the original, computerized test store (Anthony & Sylvan), and the employee there (different that yesterday) told me that my CYA levels were actually more around 250 (which corresponds to what the Aquachek test strips were showing me), but he manually changed it in the computer to just below 150 ppm, because if he didn't, the computer would suggest as the course of action a complete drain of the pool.


    So basically, pool store employees will more than likely not even tell you about your high CYA levels, or completely lie to you, to ensure that they sell product and still have a job???
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Re: New pool owner...bought house with in ground fiberglass

    Hi GuinnessPhish and welcome to TFP!
    Without another thought...get a TF-100 kit on order, you'll need it to test chlorine levels correctly and get your pool healthy and trouble free!
    Keep reading here and in Pool School to learn all you can.
    It seem hard at first but becomes very simple once you practice it.
    Once you have your test kit run a full set of test and come back and post here and we can help and advise you to get you going on the right path.
    For me...my pool using this system has helped my grandkids (raising all 3) never get ear infections now that they swim in my perfect TFP pool.
    Always had ear infections before I found this place! (I was pool stored!)

    Don't put any trust in pool store testing especially a computerized one, who knows when it was last calibrated?
    Test strips, no good either. Throw them in the trash.
    Your better off with a drop based kit from wally world until you get the TF-100 or Taylor K-2006 FAS-DPD kits
    Chuck
    Swim n Play 21' round, expandable 72" liner, 6FT deep center, buried 14", 12,750 Gallons
    Waterway 1HP-2 speed with 22" Sand filter
    TF-100 test kit
    Thanks to TFP my pool is perfect all the time :party:
    I now suffer from Sparklypoolitis! :whoot:
    I am a Platinum contributor because I want everyone who comes here to Trouble Free Pool to have the same success that I enjoy with my pool and family.

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    Re: New pool owner...bought house with in ground fiberglass

    Quote Originally Posted by supertune
    Hi GuinnessPhish and welcome to TFP!
    Without another thought...get a TF-100 kit on order, you'll need it to test chlorine levels correctly and get your pool healthy and trouble free!
    Keep reading here and in Pool School to learn all you can.
    It seem hard at first but becomes very simple once you practice it.
    Once you have your test kit run a full set of test and come back and post here and we can help and advise you to get you going on the right path.
    For me...my pool using this system has helped my grandkids (raising all 3) never get ear infections now that they swim in my perfect TFP pool.
    Always had ear infections before I found this place! (I was pool stored!)

    Don't put any trust in pool store testing especially a computerized one, who knows when it was last calibrated?
    Test strips, no good either. Throw them in the trash.
    Your better off with a drop based kit from wally world until you get the TF-100 or Taylor K-2006 FAS-DPD kits
    Chuck

    Just to be sure....

    the tf-100 kit is all i need? None of the additional options are necessary?

    Just get this?: http://tftestkits.net/TF-100-Test-Kit-p4.html
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Re: New pool owner...bought house with in ground fiberglass

    The speed-stir is a wonderful addition - optional, but totally worth the money in my opinion. I'll let others chime in on if you need any add-ons in terms of reagents, etc.
    POOL: Intex ultra new in 2014 (32 x 16 x 52) (seasonal; on concrete pad covered with 1.5" extruded or whatever foam insulation sheets - ugly, but comfy); added a through-wall skimmer; I add salt for feel. EQUIPMENT: Pentair SuperFlo pump (1HP, 2SPD); Pentair cartridge filter (200 sq. ft); Pentair MasterTemp natural gas heater (400,000 btu) Climate/Location: Eastern Nebraska

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    MikeInNH's Avatar
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    Re: New pool owner...bought house with in ground fiberglass

    TF-100 is what I have. I've needed to get more CYA re-agent and a couple yellow refills but that's after a few years of use (forget what that one is called, it's the basic chlorine test). It's a good kit, you probably want extra CYA test re-agent. It will take you a good amount of testing to get that one in the ball park. Hopefully your numbers are lower than they say.
    Mike
    2007 1st full year with AG pool~15k gallons 18'x33' JW
    6/2010 added 2 button Intex SWG-painless except for when reset
    Switched to BBB from Baquacil (couldn't pay me to go back)

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    Re: New pool owner...bought house with in ground fiberglass

    Regarding partially draining the pool and refilling....


    Should I wait until CYA is in an acceptable range before I add any thing else to balance or sanitize?
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Re: New pool owner...bought house with in ground fiberglass

    Just to be sure....

    the tf-100 kit is all i need? None of the additional options are necessary?

    Just get this?: http://tftestkits.net/TF-100-Test-Kit-p4.html

    If you feel like your overwhelmed with this chemistry thing like I was, I bought the XL kit so I could test more often and help with my slow learning curve. That helped a lot for me.
    If your going to a SWG then get salt testing kit.
    Do you know if you have any suspicion of copper in the pool previously?
    If so they have a copper test kit.
    I went a year before I got a speed stir (I was being cheap) but I do like it now I have one, the testing goes faster and simpler.

    Chuck
    Swim n Play 21' round, expandable 72" liner, 6FT deep center, buried 14", 12,750 Gallons
    Waterway 1HP-2 speed with 22" Sand filter
    TF-100 test kit
    Thanks to TFP my pool is perfect all the time :party:
    I now suffer from Sparklypoolitis! :whoot:
    I am a Platinum contributor because I want everyone who comes here to Trouble Free Pool to have the same success that I enjoy with my pool and family.

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    Re: New pool owner...bought house with in ground fiberglass

    I would at least add bleach or liquid chlorine if the waters still clear to help from losing the pool to a major algae bloom (turn to swamp).
    TF-100 kits get shipped same day most of the time from http://tftestkits.net (fantastic service from Dave and Meg)

    Chuck
    Swim n Play 21' round, expandable 72" liner, 6FT deep center, buried 14", 12,750 Gallons
    Waterway 1HP-2 speed with 22" Sand filter
    TF-100 test kit
    Thanks to TFP my pool is perfect all the time :party:
    I now suffer from Sparklypoolitis! :whoot:
    I am a Platinum contributor because I want everyone who comes here to Trouble Free Pool to have the same success that I enjoy with my pool and family.

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    Re: New pool owner...bought house with in ground fiberglass

    With CYA levels this high (250 range), might it be more practical to have the pool professionally drained and refilled? Any idea how much that costs?
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Mod Squad Bama Rambler's Avatar
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    Re: New pool owner...bought house with in ground fiberglass

    You can normally drain and refill your pool yourself. However there are some considerations depending on what type pool you have and where you're located.

    What pool do you have (type, size, etc.)?
    Are you in an area with a high water table?

    I wouldn't do anything except put a jug of bleach in the pool until you get the new test kit and know for sure what the levels are.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: New pool owner...bought house with in ground fiberglass

    Quote Originally Posted by Bama Rambler
    You can normally drain and refill your pool yourself. However there are some considerations depending on what type pool you have and where you're located.

    What pool do you have (type, size, etc.)?
    Are you in an area with a high water table?

    I wouldn't do anything except put a jug of bleach in the pool until you get the new test kit and know for sure what the levels are.
    I have a fiberglass pool, so a full drain is not possible to do without professional help, correct?

    My pool is a fiberglass, 12,000 gallon, kidney shaped pool...

    My cyanuric acid levels are the concern....in the 250 range. I'm only draining from about mid skimmer level to about three inches below that, and then replacing the water. This seems like it would take quite a long time to get my CYA levels to proper levels.
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Re: New pool owner...bought house with in ground fiberglass

    I have a fiberglass pool, so a full drain is not possible to do without professional help
    Actually, it's quite easy to do it yourself. It is done in a series of partial drain/refill steps.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: New pool owner...bought house with in ground fiberglass

    I have a fiberglass pool, so a full drain is not possible to do without professional help, correct?


    Another option that has been done is since yours is in the medium size pool range you can get a tarp or plastic sheathing larger than the pool (you can duct tape pieces together if need be) then place it on top of your pool and fill the pool to the top. Drain down just below skimmer and repeat the process till you've changed the water then just remove the plastic.
    Ponduke
    20,000 gal/ Fiberglass IG/ Sta-rite s7m120 cartridge filter/Sta-rite SR400NA 400,000 btu heater/Polaris 360 Cleaner/K-2006 Test Kit
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    Mod Squad Bama Rambler's Avatar
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    Re: New pool owner...bought house with in ground fiberglass

    As mentioned above, it's not hard at all to do. You can also take a tarp and weigh down the bottom and float the top (like a curtain wall) and drop it in one end of the pool and start filling behind it and emptying from the other end and it'll slowly move toward the other end as you fill/empty the pool. then when it's almost to the other end you can take the tarp out and let the water mix. Even without the tarp you can fill the pool in one end and empty out of the other and it works pretty well.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: New pool owner...bought house with in ground fiberglass

    Quote Originally Posted by Bama Rambler
    As mentioned above, it's not hard at all to do. You can also take a tarp and weigh down the bottom and float the top (like a curtain wall) and drop it in one end of the pool and start filling behind it and emptying from the other end and it'll slowly move toward the other end as you fill/empty the pool. then when it's almost to the other end you can take the tarp out and let the water mix. Even without the tarp you can fill the pool in one end and empty out of the other and it works pretty well.

    So I should be filling and draining at the same time?


    Tonight I filled the pool past the skimmer, almost to the top...

    Then I drained the pool to just above the danger line on step 2 of my pool (this black sticker on the step is where I can safely drain to, according to the previous owner's pool service company).

    Now, I'm refilling the pool with the hose, from the shallow end. I just added about 2 gallons of 6% regular clorox to the water as well.


    Sound about right?
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Re: New pool owner...bought house with in ground fiberglass

    Update: I've got the TF-100 kit on order. I went with some of your recommendations as well and got the XL option as well as the speed stir.

    My tablet chlorinator still has about 1 and a half trichlor tabs left in it. I plan on letting it dissolve completely and never add them again until I get my CYA level to the 30 - 50 ppm range.

    I'm a bit confused as to what my next step should be, and in what order things should be done. If anyone can let me know what I should be doing and in what order, I'd really appreciate it.
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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    Mod Squad Bama Rambler's Avatar
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    Re: New pool owner...bought house with in ground fiberglass

    It works better if you fill and drain at the same time. However your way works too.

    Once your test kit gets there we'll know more about how far you have left to go.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: New pool owner...bought house with in ground fiberglass

    Quote Originally Posted by Bama Rambler
    It works better if you fill and drain at the same time. However your way works too.

    Once your test kit gets there we'll know more about how far you have left to go.

    Ok...so, drain by turning off the skimmer, and drain solely from the main drains?

    At the same time, and at the shallow end of the pool, I should be adding water?


    What about the fact that the draining goes faster than the refilling by hose?
    8,000 gallon, in ground, fiberglass pool with a cartridge filter.

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