+ Reply to Thread
Results 1 to 10 of 23

Thread: Stains in Fiberglass pool

Hybrid View

  1. #1
    Join Date
    Dec 1969
    Location
    .
    Posts
    14

    Default Stains in Fiberglass pool

    I get brown stains in my fiberglass pool all the time. I can effectively remove them with oxalic acid, but it always turns the water cloudy for about 3 days. Jack's Magic Blue Stuff also works, but it costs me a fortune at over $20 a bottle. I heard somewhere about using ascorbic acid. Where can I get it in bulk? Is it expensive? Will it turn the water cloudy? Will it get the stain out?

  2. #2
    waterbear's Avatar
    waterbear is offline Lifetime Member Sniggle Mechanic waterbear 4 stars waterbear 4 stars waterbear 4 stars waterbear 4 stars
    Join Date
    Nov 2004
    Location
    St. Augustine, Fl
    Age
    70
    Posts
    3,743

    Default

    Iron is your problem, Oxaylic acid is a known remedy for rust (oxidized iron) stains! It is toxic, however. Phosphonic acids are also effective and are the active ingredient in most of the "metal removers" I have seen. You can learn a lot about a product by going to the manufacturer's website and reading the MSDS for it. Ascorbic acid works (if I am not mistaken) by acting as a reducing agent just like Oxaylic and Phosphonic acids. These will also lower your pH and their effectiveness is dependant on pH so read your directions!

  3. #3
    cajunfla is offline ** No working email address ** Thread Analyst cajunfla 0
    Join Date
    Dec 2004
    Location
    Jacksonville, Florida, USA.
    Posts
    50

    Default

    Have you tried the new Mr Clean Magic Eraser? My fiberglass pool gets a dirt ring around it. Not all the sod has been installed yet. Mr Clean works wonders.

  4. #4
    msehome Guest

    Default Heres a link for Ascorbic acid

    http://www.msm-msm.com/store/agora.c...scorbic%20Acid

    I have a 35,000 gal fiberglass pool and it stains all the time. Dont have a heater, and no iron pipes. It takes about a pound to a pound and a half of ascorbic acid to make the pool beautiful again. This is the cheapest I've found for it. $45.00 for 5 lbs. and if you buy over $100.00 at a time its free shipping. Heres a pic of my fiberglass pool.


    Good Luck
    Last edited by PoolDoc; 03-12-2014 at 10:12 PM. Reason: pic

  5. #5
    Join Date
    Dec 1969
    Location
    .
    Posts
    14

    Default

    Thanks, msehome, I'll give it a try. Does it turn your water cloudy when you add it?

  6. #6
    msehome Guest

    Default No Cloudy Water

    Not at all, its amazing to watch the stain dissappear right before your eyes. And the water stays clear.

    Good Luck

+ Reply to Thread

Similar Threads

  1. Fiberglass Pool Stains
    By ts8181 in forum Dealing with Stains & Metals, . . . and 'Minerals' & 'Ions',
    Replies: 1
    Last Post: 03-30-2013, 11:39 AM
  2. White splotches, spots, and lines (stains/fading?) in 3 year old fiberglass pool
    By viking in forum In-Ground Pool Construction and Repair
    Replies: 25
    Last Post: 07-26-2012, 02:49 PM
  3. Fiberglass Step with Rust Stains
    By Bossone in forum Dealing with Stains & Metals, . . . and 'Minerals' & 'Ions',
    Replies: 7
    Last Post: 07-06-2012, 05:11 PM
  4. brown stains on fiberglass pool
    By PAGUY in forum Dealing with Stains & Metals, . . . and 'Minerals' & 'Ions',
    Replies: 3
    Last Post: 06-27-2011, 07:57 PM
  5. Fiberglass pool stains
    By Pace74 in forum Dealing with Stains & Metals, . . . and 'Minerals' & 'Ions',
    Replies: 2
    Last Post: 10-20-2010, 09:29 AM

Tags for this Thread

Bookmarks

Posting Permissions

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