Jacks Magic Yellow Stuff

Jacks Magic 2lb Yellow Stuff Algaecide

2.00 LBS
Free Ground Shipping

Want to get rid of your yellow mustard algae, try Jacks Magic "The Yellow Stuff". It  is a highly effective algaecide targeted specifically at killing off yellow/mustard algae growth, a very tough form of algae that many other generic algaecides are powerless against. Its granular formula dissolves quickly without the messy measuring and handling that liquid alternatives demand, and leaves no ugly residues in your pool. Best of all, The Yellow Stuff is compatible with all pool types, making it a great choice for your pool.


Algae Removal:

    Brush walls and floor areas affected by yellow algae accumulation.
    Apply 4 ounces per 10,000 gallons as close to the affected areas as possible. For severe accumulations, double the above dosage.
    Superchlorinate by following directions of that product's label.

NOTE: Swimming may be resumed a few hours after treatment.

Weekly Maintenance Dose:

    With water temperature over 80 degrees F, add 4 ounces with 1 gallon of liquid chlorine or 1 pound of dry chlorine weekly.
    With water temperature under 80 degrees F, add 2 ounces with 1/2 gallon of liquid chlorine or 1/2 pound of dry chlorine weekly.

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.


Posted by Jamie H. on 25th Apr 2016

I've been using Jacks Magic Yellow Stuff for several years as preventative maintenance in the early spring when the live oak trees are dropping their leaves and in the late spring when everything seems to pollinate. I discovered Yellow Stuff after spending over $700 trying to clear my pool from an algae bloom... pool was deep dark turquoise blue... couldn't see past 2"... nothing worked... pool store tried to tell me I had "old" water and needed to drain my pool and start over. A very young sales associate at a pool chemical supply store told me about Jacks Magic Yellow Stuff. Worked like magic. I still have that "old water" except it's another 5 years older! Like I said, I use it now as a preventative and have never had another problem.

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