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Jack's Magic
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JACK'S MAGIC STAIN ID KIT POP BOX

$15.45
In Stock Locally
Quantity
1
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Product Overview

Diagnose iron, copper, or manganese surface discoloration in under 3 minutes before purchasing treatment chemicals.

This ingenious pop-box kit contains a durable magnetic case and six color-coded reagent tablets designed to isolate whether surface discoloration is organic, copper, iron, or manganese without chemical guesswork. Testing takes 30 to 60 seconds per site and requires water temperatures of at least 65°F. By identifying the exact chemical salt reaction needed, Jack's Magic prevents dumping 5 to 10 lbs of unneeded stain chemicals into a 15,000-gallon pool.

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Why Pool Pros Trust This

Benefits & What Makes It Different

6 Color-Coded Reagent Tablets

Pinpoints iron, copper, manganese, and mixed metallic deposits on plaster, vinyl, or fiberglass within 30 to 60 seconds.

Durable Magnetic Pop-Box Case

Heavy-duty magnetic enclosure secures test components in service caddies and keeps moisture-sensitive reagents dry.

Eliminates Chemical Guesswork

Prevents spending $50 to $150 on trial-and-error chemicals by identifying the precise Jack's Magic stain removal protocol.

Compatibility

  • Safe for use on plaster, pebble, quartz, marcite, vinyl liner, and fiberglass pool finishes
  • Requires water temperatures of 65°F or warmer for accurate reagent reaction
  • Requires free chlorine levels at or below 1 ppm during topical testing

When To Use This

Diagnosing brown, green, blue, or black surface stains on gunite, vinyl, and fiberglass poolsSelecting between Jack's Magic Stain #1 (iron/cobalt), Stain #2 (copper), or O2 Safe treatmentsTesting localized metal precipitation before balancing chemistry for a full-pool stain lift

Pro Tip

Lower your free chlorine below 1 ppm before testing; high sanitizer levels neutralize reagent acids within 5 seconds and produce false negatives. In hard water areas with calcium hardness above 400 ppm, metal stains often bind beneath scale layers, requiring a full 60 seconds of direct tablet contact to dissolve the matrix.

Common Questions & Instructions

What pool water temperature is required to use the Jack's Magic Stain ID Kit?

STOP! Do not begin treatment if water temperature is below 65°. Chemical reactions on metal and mineral stains slow down significantly below 65°F (18°C), which causes false-negative results and leads to misdiagnosed chemical treatments.

What water chemistry parameters are needed before running this stain test?

Free chlorine must be dropped to 1 ppm or below before testing. Ensure your pool water is balanced within standard ranges: pH 7.2–7.6 and total alkalinity 80–120 ppm. High chlorine levels above 3 ppm will bleach or oxidize the reagent tablets instantly.

How long should the reagent tablet stay in contact with the stain?

Hold the designated reagent tablet firmly against the stained surface for 30 to 45 seconds using a skimmer pole attachment or test bag. A positive reaction will visibly lift or lighten the stain within 60 seconds of topical contact.

Same-Day DFW Delivery

Delivered today to your DFW neighborhood

Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.

Free checklist

The DFW month-by-month pool checklist

What it covers (12 months · 76 tasks · 12 marked critical):

  • Freeze nights (January and December): keep the pump running, and what to drain if the power goes out
  • The March opening: test everything, brush, shock, then balance alkalinity, pH and calcium
  • Summer: testing two or three times a week, the weekly shock, and what to do after rain or a party
  • Fall leaves, and easing the chemistry down for winter
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One email with a link to the printable checklist — print it, or save it as a PDF, from that page. That is all we send: no mailing list.

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Northlake, TX 76226

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