Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: SLAM problem

  1. Back To Top    #1

    Join Date
    Sep 2015
    Location
    Los Angeles
    Posts
    31

    SLAM problem

    I've been slamming for the last 4 days (also cleaned the filter which was filthy). Water is clear. Combined chlorine is .5 or or below. But over night loss is still at 4.5. What am I doing wrong?

    CYA is 40
    PH 7.4
    TA 70

    Thanks!
    1100 gallon gunite IG spa with vanishing edge and 300 gallon overflow basin. Cartridge filter, hayward variable speed pump, finished 11/15/15, Taylor kit,



  2. Back To Top    #2

    Join Date
    Jul 2015
    Location
    Montreal/Quebec/Canada
    Posts
    40

    Re: SLAM problem

    What is your FC level at? Are you making sure to maintain it at the right level for your pool (e.g. use Pool Math Calculator).
    In-Ground Dauphin Pool (circa 1970), 21K gallons, Vinyl liner, 1.5 HP Hayward Pump, Hayward Pro Series S-244T Sand Filter, LIQUID CHLORINE!

  3. Back To Top    #3

    Join Date
    Sep 2015
    Location
    Los Angeles
    Posts
    31

    Re: SLAM problem

    FC was at 16 for slamming at 40 CYA. in the morning it was 11.5.
    1100 gallon gunite IG spa with vanishing edge and 300 gallon overflow basin. Cartridge filter, hayward variable speed pump, finished 11/15/15, Taylor kit,



  4. Back To Top    #4

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,083

    Re: SLAM problem

    Slam is a process that can take several days. Even if your water is clear, your overnight FC loss says you still have (invisible) organics in your pool that need to be killed by the SLAM level FC.

    Stay the course. Keep you FC up at SLAM until you pass the OCLT.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5

    Join Date
    Mar 2014
    Location
    Angleton, Tx
    Posts
    90

    Re: SLAM problem

    as stated above.. Keep FC at slam level, check and adjust FC as often as possible, brushing pool helps. My slam took 2 weeks, be patient you will get there.
    IG Pebble sheen blue surf approx. 14k gallon, beach entry, 7' spa, 3.5 ton jumping rock/waterfall, Pentair 2hp whisper flo, booster pump, 520 cartridge filter, Stenner Econ T, 400k master temp heater, easy touch controls,TF-100 w/speedstir

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •