Jacks Magic Yellow Stuff Algaecide, 2 lb Bottle | JMYELLOW2

JacksMagic SKU: JMPYELLOW2
Jacks Magic Yellow Stuff Algaecide, 2 lb Bottle | JMYELLOW2 - Chems - img - 1

Jacks Magic Yellow Stuff Algaecide, 2 lb Bottle | JMYELLOW2

JacksMagic SKU: JMPYELLOW2
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Jack’s Magic The Yellow Stuff Algaecide – 2 lb (Part # JMYELLOW2)

Jack’s Magic The Yellow Stuff is a powerful, all-purpose algaecide formulated to treat and prevent yellow, mustard and other resistant algae in swimming pools. The granular formula dissolves quickly, works with all major sanitizer systems, and is safe for all pool finishes.

Key Features

  • Effective treatment of yellow/mustard algae breakouts in pools.
  • Also functions as a preventative to reduce future algae outbreaks.
  • Safe for all pool finishes and compatible with chlorine, bromine and salt sanitizers.
  • Rapidly dissolves with minimal residue, allowing swimming in a few hours.

Typical Applications

Ideal after heavy rains, high sunlight exposure, heavy bather load or whenever your pool exhibits mustard-colored algae or persistent waterline staining associated with algae. Use during seasonal clean-ups or as part of a regular maintenance plan to stay ahead of algae growth.

Usage & Compatibility Notes

Balance pool water chemistry before treatment. For initial dose: treat at approximately 4 oz per 10,000 gallons of water. For severe algae, increase dosage and then shock with sanitizer. Compatible with all major systems and safe for vinyl, fiberglass and plaster finishes.

Why Choose This Product?

The Yellow Stuff delivers a targeted solution for difficult algae types that standard treatments struggle with. For pool professionals, service techs or owners who need fast and reliable algae control, this product helps save labor, protect filtration media and restore clarity.

Maintenance Tips

  • Monitor for early signs of algae growth or film and treat promptly to keep load down.
  • Ensure your filter is operating cleanly—large algae loads place extra strain on filters and pumps.
  • After treatment, check sanitizer levels and inspect any remaining debris; vacuum or filter as needed.
  • Store sealed and dry—moisture can affect product performance.

Hours Of Operation: 

Monday - Friday: 8:00 am to 4:00 pm Phoenix Time

Saturday and Sunday: Closed

  • Orders costing more than  $300 WILL be required to have signature confirmation upon delivery.
  • Handling time is typically only 1 day.   
  • Any item ordered after 1pm Phoenix time, may not ship same-day.
  • Call us if you require expedited shipping and we can give you quotes based on your needs.

Return Policy:

  • All products, except as noted below, are eligible for return up to 30 days after receipt of item.
  • For returns, an RMA form must be filled out HERE or customers can call for additional help.
  • Shipping costs will be deducted from all returned items.
  • Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in. 
  • Items broken, damaged, or inoperable due to installer error will not be refunded.
  • Fill out the return form or give us a call to obtain an RMA and return shipping label.
  • There are no returns on the Pentair Colorsync 618031
  • No returns on pool cleaners.
  • No returns on opened seals and o-rings.
  • No returns on capacitors.
  • If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
  • All products denied upon arrival at customers house WILL be charged the cost to ship.
  • Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.