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Thread: RE: In-Ground, DE Filter Pool With Clear Green Water

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  1. #3
    Join Date
    Jul 2012
    Location
    California
    Posts
    12

    Default Re: Stubborn green water in an in-ground pool.

    Thanks for the reply.

    I used 3/4 of a box of borax before I read your reply and got the pH up. How much I'm not sure because I got 3 different readings from 3 different tests.

    Pool phenol red test-7.8 + two aquarium tests: for reg. pH-7.0; for high pH-7.4. But even the low one is better than it was. I can add the rest and get some more today, but I still won't be certain what the actual pH will be. I can see now we were kinda flying blind with such a limited test kit.

    I added two gallons of 10% liquid chlorine and got the level up to 1.0. Next I added the Polyquat 60% according to the instructions. We backwashed before the borax and once more before the chlorine, but not after the Polyquat,and brushed down the sides.

    We ran the pump 24hrs. after the chlorine addition, but I'm having a bit of a hard time convincing my husband to let it run that 24/7 longer than a day.

    Pool temps have been about 84*F

    We don't have iron pipes, they're copper or pvc with the exception of a 2' section in the filter shed.

    Looks like my test kit will arrive between the 3rd and the 8th. Hopefully sooner!

    We are hosting my grand nephew's 2nd birthday party on September 1st with a parent/tot swim party and really need to get this dialed in by then.

    I really appreciate your time and advice!
    Last edited by PoolDoc; 08-02-2012 at 03:52 PM. Reason: turn signature on
    17x40 free-form 35K gal IG pool; trichlor feeder; System:3, S8D110 DE filter; Max-E-Glas II, 1 HP pump; 4.5 hrs; OTO kit - K2006 ordered; utility water; none; PF:3.4

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