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MASSACHUSSETTS
Lawrence MA
70 South Broadway
Lawrence, MA 01843
(978) 688-8307
NEW HAMPSHIRE
Kingston, NH
3 Newton Junction Rd
Kingston, NH 03848
(603) 642-9909
FREE
WATER TESTING
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How to Tackle Staining

FIRST: Determine that the stains are not Bleed Through Mold (also known as the 'Bold Mold') if you haven’t already.

Now, let’s decide if the stains are “organic” or “mineral”.

ASK YOURSELF THESE QUESTIONS:
 

Num Question Answers/Help
1. Are the stains brown or purple? yes=most likely mineral, iron or manganese
2. Are the stains blue-green on a gunite surface? yes=most likely mineral, copper
3. Are the stains on the vertical walls? yes=verifying that the stains are most likely not bleed-through mold, and could be organic or mineral
4. Is the entire pool stained, maybe with the exception a clean spot where there was a toy sitting? yes=mineral, typical mineral fall out from water chemistry
5. Were the stains there when you opened the pool but not when you closed it? yes=probably mineral because often minerals in the water fall out of solution over the winter due to uncontrollable changes in water chemistry, however, see next question
6. Did the stain darken as a result of adding Shock Treatment? yes=try mineral solutions
7. Did the stains appear as a reaction to adding Shock, Total Control 1000 or Builder 2000? yes=try mineral solutions-these products cause minerals to fall out of solution
8. Are the stains spreading? yes=most likely organic, not necessarily
9. Are the stains spotty and blotchy? yes=could be black algae-try suggestions for organic-make sure you ruled out bleed-through mold. Black algae tends to adhere to gunite surfaces nicely due to the surface structure
10. Was your pool full of leaves or organic debris and algae when closed? yes=try organic solutions first)
11. Did the stains lighten as a result of adding Shock Treatment? yes=organic -if they return, make sure you rule out bleed-through mold
12. With effort, do the stains scrape off? yes= it’s probably an algae, you cannot scrape off a mineral stain-try the organic treatments
13. Is the pool a gunite pool? yes=not bleed-through mold, if black and spotty could be black algae, if brown most-likely mineral but could be either)
14. Have you tried anything on the stains? (yes=investigate what you tried and if it worked. If you tried a mineral solution (acid-based) and got no results, change course. If you tried an algaecide or shock and got no results, change course

Okay, have you got your facts straight?

  • If you answered “yes” to most of the questions 1 through 7, try our “mineral stain suggestions”.
  • If you answered “yes” to most of the questions 8 through 13, try our “organic stain suggestions” below.

Still not sure? Try this tip…place a vitamin “c” tablet on the stain and, if when the tablet dissolves, there is a clean spot…it’s a mineral stain because the acid in the vitamin tablet will have lifted the stain.

Let’s take a couple notes:

  • Acids remove mineral stains.
  • Usually shock treatments, and sometimes algaecides, remove organic stains.

Mineral Stain Suggestions

Mineral Stain Suggestions to try:

  1. Try Spot Specialist if you use Pristine Blue or Algae Shield. You can put it in a sock and rub it directly onto the stain wearing rubber gloves, broadcast it, with the filter off, over the stains, or dilute it in a bucket of water and pour it down the walls over the stains. Cloudiness is common with Spot Specialist but it normally clears on its own. Use the sock method and push the sock into place with a pole and brush if the stain is in an unreachable place. Try this if you suspect that the stains are mineral.
  2. Try Metal Muscle, Super Erace, or Spot Specialist if you do not use Pristine Blue or Algae Shield. With the Alkalinity and PH in balance and the filter off, pour Metal Muscle or Super Erace over the stains or as close as possible, let it sit for about an hour, then turn the filter on.

Organic Stain Suggestions

Organic Stain Suggestions to try:

  1. Raise the water level over the stains and shock the pool. Try this if you suspect that the stains are organic.
  2. Try Ring Leader for top stains and stains on steps, swimouts, or buddy seats. You can put Ring Leader in a sponge applicator with a refillable handle like you use in your kitchen for underwater treatment.

We always like to try a little bit of a product first to see how it is going to work before we invest much into it. We do not like to waste anyone’s money at Family Pools. If the suggestion you tried worked, then invest in the proper dosage for your pool. Simply ask one of our representatives in the store or check our product dosage rates.

It never hurts to brush the stains after the treatment has been added, although it is not usually necessary. If lightening occurs but not disappearance, repeat the treatment process.

For severe, recurring mineral problems, ask us about Jack Magic.

White fixtures and steps stain the easiest as does white plaster.

 

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