Jacks Magic Yellow Stuff Algaecide, 2 lb Bottle | JMYELLOW2
JacksMagic
SKU: JMYELLOW2
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.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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