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

Thread: CLR and a SWG?

  1. Back To Top    #1

    Join Date
    Jul 2015
    Location
    Rosenberg, TX
    Posts
    8

    CLR and a SWG?

    Long story short, I have very high CH and TA and really have no way around it. I installed my Intex SWG last Thursday and by Sunday I had a low salt fault. I read on here to check the element and the plate(thank you TFP) and sure enough they were both caked in calcium. I unhooked the unit and started the cleaning process with vinegar as per the instructions, and after 2 hours there was still quite a bit of calcium everywhere. My wife suggested using some CLR, so I did. I mixed up a 4 to 1 mixture of vinegar to CLR and everything was spotless in 30 minutes. I hooked the unit back up and everything was working great again. Today is Wednesday and everything is caked up again in calcium. Does anyone see a problem with using a Vinegar CLR solution again and using this on a regular basis? Is there anyway to reduce CH without getting a different water source? Thanks in advance for input.
    Rosenberg, TX, Intex above ground Ultra frame 22'x52" filled with 10,400 gallons of well water, Intex SF70110 sand filter, Intex ECO 8110 saltwater system, Intex 633T cart filter running the Aqua Bug, Intex skimmer, TF-100 test kit.

  2. Back To Top    #2


    TFP Guide

    cowboycasey's Avatar
    Join Date
    Jul 2013
    Location
    Fletcher, OK
    Posts
    3,346

    Re: CLR and a SWG?

    unfortunately you can only lower CH and CYA by emptying water and refilling.. I take it your fill water is high in ch, or did you use calhypo to begin with?

    - - - Updated - - -

    I was thinking you were using simple green, not CLR, sorry about that...
    Last edited by cowboycasey; 07-29-2015 at 07:47 PM. Reason: corrected CLR
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

  3. Back To Top    #3
    JoyfulNoise's Avatar
    Join Date
    May 2015
    Location
    Tucson, AZ
    Posts
    11,605

    Re: CLR and a SWG?

    You have to be careful with CLR as it is mostly sulfamic and oxalic acid. You should only use the manufacturers recommended cleaning procedure as the SWG plates have specialized thin metal catalyst coatings on them and there's no way to know how CLR might react with the metals in the catalyst. Typically manufacturers suggest either dilute muriatic acid (5:1 water:MA) or acetic acid (vinegar) because those acids will not damage the coating. I'm guessing your plates are fine, but I would stick with the manufacturers recommended procedure.

    As for your scaling issue, if you can post water test numbers with your TA & CH values, we might get to the bottom of your scaling issue. The amount of scaling you are reporting is very unusual and would seem to indicate that your water balance is way off.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

  4. Back To Top    #4

    Join Date
    Jun 2011
    Location
    Long Beach, CA
    Posts
    2,671

    Re: CLR and a SWG?

    Don't forget to post the pH. The pH, TA, and CH are the main culprits that lead to scale.

    Muriatic acid will take care of high pH, high TA, and will clean the scale off the plates.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

  5. Back To Top    #5

    Join Date
    Jul 2015
    Location
    Rosenberg, TX
    Posts
    8

    Re: CLR and a SWG?

    Thanks for the replies. Yes my water is from a well and is very high TA and CH. Below are my numbers from yesterday.

    Temp 92
    FC 4.5
    PH 7.5
    TA 200
    CH 475
    CYA 70
    CC .5
    Rosenberg, TX, Intex above ground Ultra frame 22'x52" filled with 10,400 gallons of well water, Intex SF70110 sand filter, Intex ECO 8110 saltwater system, Intex 633T cart filter running the Aqua Bug, Intex skimmer, TF-100 test kit.

  6. Back To Top    #6

    Join Date
    Jun 2011
    Location
    Long Beach, CA
    Posts
    2,671

    Re: CLR and a SWG?

    You need to work on Lowering Total Alkalinity and keeping the pH down in the low 7's.

    You will need muriatic acid and look into adding some type of aerator so the lowering TA process will be sped up. There are many people that have made their own aerators and a search for aerators should point you in the right direction.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

Posting Permissions

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