Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: My filter might be fighting against my SLAM

  1. Back To Top    #1

    Join Date
    Jan 2014
    Location
    Brookhaven, MS
    Posts
    45

    My filter might be fighting against my SLAM

    I've been SLAMming for about a week now and I think my numbers are on the right track.
    My pool is still REAL cloudy, though. And I've noticed a fair amount of sand in the bottom. It's possible it might have been there from last season.

    screenshot.jpg

    If I remove my sand and check the laterals, will this undo my SLAM progress?
    Should I bring any levels up prior to working on the filter? I'm guessing my filter will be out of commission for ~8hrs or so. Possibly longer if I have to order a new lateral assembly.

    Thoughts?
    18x36 25k Gal Inground Vinyl Pool
    300lb Sand Filter / 1.5hp Single Speed Pump / Intellichlor IC40 SWG / Polaris 280 w/booster pump

  2. Back To Top    #2


    TFP Guide

    domct203's Avatar
    Join Date
    Jun 2015
    Location
    CT
    Posts
    3,915

    Re: My filter might be fighting against my SLAM

    If you could at least continue to circulate the water while maintaining FC you will not loose any ground killing algae. Keep brushing as well.

    If you find that the laterals are damaged, run the system on recirculate until the new laterals arrive.

    As far as clearing the dead algae from the water, without a filter that is going to slow down significantly. You could shut the system off for 20 min or so, then vacuum to waste whatever settles on the floor, to try to stay ahead of it.

    The most critical part of the SLAM is the maintain... keep that FC at shock level, and circulating.

    BTW- that's a great log you have there. If I could make one recommendation, document the amount of FC added, either in ppm or oz. If/when an 'organic' issue tries to infiltrate your pool you will see it in the amount of chlorine needed, even before the water starts to loose it's sparkle.
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

  3. Back To Top    #3
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    17,347

    Re: My filter might be fighting against my SLAM

    If I remove my sand and check the laterals, will this undo my SLAM progress?
    Not really. I mean as long as it's not a significant amount of time. Hopefully nothing is damaged so you can fill it back up and continue with the SLAM.

    Something else to consider before emptying ... have you performed a thorough deep cleaning as noted here: Deep Cleaning a Sand Filter? This could help if the sand got compacted, channeled, or filthy. At least this way you don't have to empty it .... yet.

    I like your testing log as well. Looks very-much like my Excel spreadsheet which I also include "comments" to show me how much bleach, acid, or other maintenance I do. Nice.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  4. Back To Top    #4

    Join Date
    Jan 2014
    Location
    Brookhaven, MS
    Posts
    45

    Re: My filter might be fighting against my SLAM

    Quote Originally Posted by domct203 View Post
    If you could at least continue to circulate the water while maintaining FC you will not loose any ground killing algae. Keep brushing as well.

    If you find that the laterals are damaged, run the system on recirculate until the new laterals arrive.

    As far as clearing the dead algae from the water, without a filter that is going to slow down significantly. You could shut the system off for 20 min or so, then vacuum to waste whatever settles on the floor, to try to stay ahead of it.

    The most critical part of the SLAM is the maintain... keep that FC at shock level, and circulating.

    BTW- that's a great log you have there. If I could make one recommendation, document the amount of FC added, either in ppm or oz. If/when an 'organic' issue tries to infiltrate your pool you will see it in the amount of chlorine needed, even before the water starts to loose it's sparkle.
    Thanks - good idea about running on recirculate - I hadnt considered that.
    I do need to start taking better notes on my SLAM progress - I do plan on keeping that spreadsheet going indefinitely!

    - - - Updated - - -

    Quote Originally Posted by Texas Splash View Post
    Not really. I mean as long as it's not a significant amount of time. Hopefully nothing is damaged so you can fill it back up and continue with the SLAM.

    Something else to consider before emptying ... have you performed a thorough deep cleaning as noted here: Deep Cleaning a Sand Filter? This could help if the sand got compacted, channeled, or filthy. At least this way you don't have to empty it .... yet.

    I like your testing log as well. Looks very-much like my Excel spreadsheet which I also include "comments" to show me how much bleach, acid, or other maintenance I do. Nice.
    Yeah, I actually did the deep clean last season and it churned up some good 'muck'. Didnt take that long and I highly recommend it to others.
    I plan on keeping my sand when I check the laterals this weekend. I will use a wet-dry vac and empty it into my tractor's front-end loader to keep it off the ground. I can then put it all back together fairly easy.
    I'll post pics along the way.
    18x36 25k Gal Inground Vinyl Pool
    300lb Sand Filter / 1.5hp Single Speed Pump / Intellichlor IC40 SWG / Polaris 280 w/booster pump

  5. Back To Top    #5

    TFP Guide
    Mr Bruce's Avatar
    Join Date
    Mar 2014
    Location
    Greenville, SC
    Posts
    2,091

    Re: My filter might be fighting against my SLAM

    Just another heads up, the pH test is invalid with FC above 10. You can skip them all except FC/CC during a SLAM, unless you replace a bunch of water and lose CYA.
    32K gallon Plaster - CircuPool SJ-55 SWG - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL/K-1766
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart - Support TFP

  6. Back To Top    #6

    Join Date
    Jan 2014
    Location
    Brookhaven, MS
    Posts
    45

    Re: My filter might be fighting against my SLAM

    Quote Originally Posted by Mr Bruce View Post
    Just another heads up, the pH test is invalid with FC above 10. You can skip them all except FC/CC during a SLAM, unless you replace a bunch of water and lose CYA.
    Ah - Thanks!
    Yeah, I ran out of CYA reagents and should have them in the mail today...
    18x36 25k Gal Inground Vinyl Pool
    300lb Sand Filter / 1.5hp Single Speed Pump / Intellichlor IC40 SWG / Polaris 280 w/booster pump

Posting Permissions

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