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Thread: SLAM Finally Finished!

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    Join Date
    May 2012
    Location
    Surprise, Az
    Posts
    10

    SLAM Finally Finished!

    FC 25
    CC 0
    PH 8.0
    TA 100
    CH 450
    CYA 60

    Just wanted to thank everyone here for the information and guidance I found on these forums. OCLT was zero last night so apparently I am finished my first SLAM after getting an algae outbreak from a SWG failure (stopped generating chlorine even though it tested good at the pool store!) a few weeks ago. It's been mentioned in a few posts but I think it should emphasized that you need to clean out behind any pool lights when doing the SLAM, not checking this cost me three days. It's been over a week since worrying about anything else than chlorine and CYA it's now to get the levels back to where they should be. And for those of you who are in the process of do a SLAM have patience as it can be painfully slow and remember it will work if you follow it correctly.
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    11,250 gallon in-ground plaster pool, Hayward/GoldLine AquaLogic AQL-PS-8 control panel, Hayward TriStar 1 HP pump, Hayward SwimClear cartridge filter (324 Sf), Hayward Turbo Cell T-Cell 15 SWG, Navigator Robotic Cleaner, TF-100 Test Kit

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    In the Industry

    Donldson's Avatar
    Join Date
    Jun 2009
    Location
    NW Ohio
    Posts
    2,637

    Re: SLAM Finally Finished!

    Fine job! Wait til your FC drops below 10 to test and/or adjust your pH. It's probably reading higher than it really is.

    Are you getting your SWG fixed and keeping it? If so you may want to consider raising your CYA level up to 80. It will help your SWG keep up with the Arizona sun better.

    I know, I'm full of answers to questions nobody asked :P The pool looks great!!
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

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    linen's Avatar
    Join Date
    Jul 2010
    Location
    Twin Cities, MN
    Posts
    8,649

    Re: SLAM Finally Finished!

    As Donldson suggested once below 10 ppm FC then check your ph. You will want to keep your ph a little on the low side (down to 7.2) since your CH is a little high to prevent future scaling. Most likely your fill water is also high in CH, so it will continue to creep up. See: http://www.troublefreepool.com/pool-...alcium_scaling
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  4. Back To Top    #4

    Join Date
    May 2012
    Location
    Surprise, Az
    Posts
    10

    Re: SLAM Finally Finished!

    Yes just past the OCLT this morning so am waiting for the 109 degree sun to burn off the some of the chlorine as I'm sure PH number is off and possibly the other readings as well. I normally keep the CYA at 80 as without being that high there is significant FC loss during the day. I drained some water to get it down to manageable level before the SLAM so know it needs to be rasied back to normal levels. I'm aware of the high CH level and normally keep the PH below 7.4 but the water here is pretty high out of the tap. Scaling was definitely a problem with the previous owners and I've been brushing to SLOWLY remove it. New SWG installed two days after the other one failed but got the algae because I didn't add enough bleach to keep the level high enough on the day the heat got to 120 degrees. I've been using the Pool Calculator since we moved in a little over a year ago and this is the first time I have had to SLAM the pool. Still occasionally take a water sample to the pool store when looking at what toys are on sale and they always tell me it's prefect, well other than trying to sell me phosphate remover. So again thanks for the additional questions and advice and for saving me a vast amount of time and money over the last year.
    11,250 gallon in-ground plaster pool, Hayward/GoldLine AquaLogic AQL-PS-8 control panel, Hayward TriStar 1 HP pump, Hayward SwimClear cartridge filter (324 Sf), Hayward Turbo Cell T-Cell 15 SWG, Navigator Robotic Cleaner, TF-100 Test Kit

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