Model # 71502
GLB® Pool Closing Kit – 71502
3-in-1 Winterizing System | For Pools up to 12,000 Gallons
✅ Features & Benefits
✅ Complete three-part winterizing system for clean, clear spring openings
✅ Includes:
Algimycin® Winter Algaecide – EPA-registered, non-foaming, non-metallic algaecide
Oxy-Brite® Shock Oxidizer – chlorine-free, removes contaminants & brightens water
Sequa-Sol® Sequestering Agent – prevents scaling & staining from minerals
✅ Protects against algae, scale, and cloudy water all winter long
✅ Hassle-free pool opening in the spring
✅ Compatible with chlorine, bromine, ozone, and saltwater pools
➡️ Easy, Effective Pool Winterization
➡️ The GLB® Pool Closing Kit combines oxidizer, algaecide, and scale protection in one package—keeping your pool water balanced, clear, and algae-free all winter.
⚠️ Tech Tips & Cautions
⚠️ Always follow dosing instructions based on pool volume
⚠️ If your pool remains open in mild climates, continue routine sanitation & chemical checks
⚠️ Wear gloves and eye protection when handling pool chemicals
⚠️ Store in a cool, dry place away from direct sunlight
See more pool chemicals.
The Most Helpful Review
3 0
(3 out of 5 stars) don't look at the picture - note only 3 of the products come in kit
Reviewed By: DKayD from Chippewa Falls, WI ()
Pros: GLB is an awesome product !!
Package consists of Winter Algemycin, packet of OxyBrite and bottle of Sequasol... which is enough to close pool properly, but not as the picture with the ad shows...
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The Most Recent Reviews
1 0
(5 out of 5 stars) EASY to USE POOL CLOSING SUPPLIES
Reviewed By: Inyo Customer ()
Easy to use and to understand instructions.... This is the 2nd year I have used these products. Also purchased a winter pool cover at the same time.
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(5 out of 5 stars) Good Price for Closing Kit
Reviewed By: Inyo Customer ()
Good price for a closing kit.
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2 0
(5 out of 5 stars) Easy and trouble free closing kit
Reviewed By: Glen D. from old bethpage, NY ()
Pros: fast service, great prices, product works well
Cons: none
This is my second time using the closing kit. It is so easy, just follow the simple rules sent in the package and in 15 minutes the job is done. i buy all my pool products from GLB they have fast delivery and good prices but most important the chemicals work perfectly Thanks Glen D
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1 0
(5 out of 5 stars) Closing Kit
Reviewed By: Bummie from Brazil, IN ()
Pros: pricing and shipping time
Great price and fast shipper Thank You
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1 2
(3 out of 5 stars) Closing kit for small pools.
Reviewed By: Edward H. from Ulster Park, NY ()
Cons: Box is misleading as for the number of gallons.
The outside of the box says for pools up to 12,000 gallons. The pool care guide and the instrutions on the chemicals say to use for 10,000 gallons. Not sure why the outside of the box says for up to 12,000 gallons. Definely would not purchase again.
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1 1
(4 out of 5 stars) leaking bottle
Reviewed By: Richard H. from Deerfield, NH ()
even though the bottles had tape over the cap and were wrapped in bubble wrap, the bottle containing the metal remover was leaking from the seal broken on the top. The contents were all slimy inside and about 1/5 of the bottle spilled out.
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