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Thread: Introduction and request for suggestions from veteran pool owner of 37 years

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    Join Date
    Jun 2015

    Introduction and request for suggestions from veteran pool owner of 37 years


    My name is Charlie and I reside in RI. I have been reading this forum with interest for over a week and I am very impressed with the information I have found here. I thank you for accepting me into your fold and for any information you may provide.

    It is rather ironic that I am posting here in need of help because I have owned this very same pool for over 37 years and have never had a problem opening it. This year I was forced to hire someone to open the pool for me because of neck and back problems that prevented me from doing it myself. The contractor that I hired is very well known to me and has an excellent track record for repairing pool problems, such as leaks, liner installations, etc.

    They removed the cover from my pool and put some algecide into it. I do not have any idea of the kind or amount of algecide. They then told me to get some liquid chlorine and to give the pool a good shock which I did. I was amazed to see how quickly my pool had cleared to a light green color and within two days I was able to see my drain in the pool's deep end. I should note that my water was balanced according to the test strips I was using, and also according to my neighbors pool test kit chemicals. As effective as I had been at pool openings in the past 37 years I had never seen my pool clear so quickly. Despite the quick clearing the green never went away. It may have become a slightly lighter shade of green and the pool water is very clear but the green never left. I went to the pool store and told the operator about my problem. He gave me 4 gallons of algecide and told me to dump them all in. He told me to follow that up a couple of hours later with three carboys of chlorine to shock the pool. This was probably around 22 gallons of chlorine. We waited and waited and the pool showed no signs of losing the light green tint. It should be noted that while we waited and waited we vacuumed to waste three times completely evacuating the pool of all bottom material. We brushed the pool and walls, and we even changed the 20 year old sand in our filter last week. Despite all this no signs of improvement whatsoever. Our most recent attempt to solve the problem was to order the T-100 test kit which arrived today, and to put DE into our sand filter to raise the operating pressure 1 LB. We have put the DE in a second time after back washing a second time but still no improvement.

    I should also note that the pool store had me put in more chlorine and algecide after the first time but I don't remember how much. I did check the pool stores algecide container and did not see any mention of copper on the label. I should also not that very little water was added to the pool this year, but when we did add water it came from the City which historically has not had any metal issues.

    Upon using the new test kit today here are the results:

    Chlorine Drop Test 10
    Combined Chloramines .5
    Calcium Hardness 50
    Total Alkalinity 110
    CYA 42
    Total Chlorine 10.5 if I did it right
    PH 7.5

    I know that the Calcium Hardness is low but I hate to tackle that now unless it is the culprit causing the problem. Needless to say we are wits end trying to solve this problem. I am suspecting that the light green may be caused by copper maybe from the algecide. As a last ditch effort we have CULator arriving tomorrow, but I will not put it in until I get a consensus from all of you. Have any ideas? Please let me know.

    Thanks for any and all suggestions.
    20X40 inground pool, vinyl liner, approximately 33,000 gallons (has deep end & hopper). Filtered by a 1.5 HP motor combined with aHaywood S-200 sand filter(sand changed 6/15).

  2. Back To Top    #2
    Mod Squad YippeeSkippy's Avatar
    Join Date
    Jan 2012
    'burbs of Augusta, Georgia

    Re: Introduction and request for suggestions from veteran pool owner of 37 years

    Ouch~I'm sorry to hear you sure have had a time of it this year, eh?

    I too wonder if all that algaecide may be the source of your woes? Perhaps the man who opened and serviced the pool initially added some with copper even if the type you later added didn't contain any. Hard to know without the empty bottles in a pile to check.

    I also suspect that the pool needs to be tested for metals. The pool store ought to be able to help here...and I say that with trepidation. Their testing is scary at most times but I don't know if you'll have a metals test available otherwise?

    It may just take a lot of liquid chlorine (bleach) to clear up the green, or it may require a metal sequestrant. Don't add mass quantities of liquid chlorine in again at one time (that 22 gallon addition they told you to do) as it can be harsh on your liner.

    The GOOD news is you have a vinyl pool! You don't need to worry about Calcium Hardness!!
    Maddie :) 12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

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    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Tallahassee, FL

    Re: Introduction and request for suggestions from veteran pool owner of 37 years

    Here is a link to two metal tests.

    I hope that is not what it is but........better to know so we can help you get your water clear again.

    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  4. Back To Top    #4

    Join Date
    Jun 2011
    Long Beach, CA

    Re: Introduction and request for suggestions from veteran pool owner of 37 years

    Welcome to TFP!

    Here are a couple of links that might help, Green Water Discolouration and Pool School - Metals in the Water and Metal Stains.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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