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  1. #1
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    Default Re: keeping up

    Bleach is 6% sodium hypochlorite, so that is the same stuff, just a higher concentration. Thus, you could be able to use approximately half as much to achieve the same affect -- assuming it really is 12%. Sometimes the higher concentrated stuff degrades faster so it may not actually be that potent.

    As far as how often you'll have to add it, you'll just have to test and learn the pattern of your pool. For now, I'd test every evening and add enough to get back to about 6ppm. Then test the next evening and add enough to get back up to 6ppm. With a CYA of 40, you don't want it to drop below 3ppm.

  2. #2
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    Default Re: keeping up

    10-4 thanks

  3. #3
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    Default Re: keeping up

    I just want to say thanks again for all your help. I added the Borax about 1/4 of the box and by the next day the water was crystal clear. and now that it is crystal clear I notice sand or DE on the floor of the pool. The last time I took the filter apart I inspected the fingers pretty well I thought and everything looked perfect. I did notice that i was missing a screw and nut on the rubber connecting it to the cover. Could this one missing screw be enough to allow some DE through or is there something else I should be checking?

  4. #4
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    Default Re: keeping up

    I'd replace the screw on principle alone. But be sure to get the correct one. You have to get one that is designed for a chlorine pool filter. It may cost you $7.

    Check to make sure you don't have too much DE in the filter. Back flush and weigh out the exact amount required.
    Circa 1980 IG, VL, 36K Gal, DE, Chlorine

  5. #5
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    Default Re: keeping up

    i got that bolt in last week. not as much sand/DE in the pool as before but still some. i don't see any rips in the fingers at all. pH went down to 7.2 added more borax went up to 7.8. sparkling water. have been able to keep FC around 3 with adding 1/2 gal bleach every other day. I'm ecstatic with all the help I've gotten here. just wish i had more time to work on pool or come on here. work and kids are keeping me extremely busy

  6. #6
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    Default Re: keeping up

    Just an update. Am keeping fc around 3.5 although it does dissipate rather quickly.
    TA 130
    Ch 90
    Ph 7.4
    Cya 40
    Water temp avg 86 has been as high as 92 in the past few weeks.

    =======================================

    Lol I hit enter before I was done. Am mobile. Should I raise any other levels to slow the loss of FC or is it just the high temp that I'm contending with. Also I have to raise pH every other week

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