Jack's Magic Blue Stuff pool metal sequestering treatment — 1 qt, prevents stains & scale, chlorine-stable

Jack's Magic Blue Stuff is a concentrated pool and water-feature treatment that prevents metal stains and scale while resisting high chlorine levels and removing dissolved copper from water.

Designed as an advanced alternative to Jack's Magic Pink Stuff, Blue Stuff combines a proprietary metal-sequestering formula with chlorine stability so it works reliably in pools, fountains and other water features. It’s formulated to be safe on all common pool finishes and helps stop metals from oxidizing into visible stains. For pools already showing discoloration, use a Stain ID Kit to select targeted stain removers before beginning maintenance dosing.

How does Blue Stuff stop metal stains and scale?

Blue Stuff contains chelating agents that bind dissolved metals—such as copper—keeping them in solution and preventing them from oxidizing onto plaster, concrete, vinyl or tile. By tying up metal ions, it reduces the chance of colored deposits forming and helps limit mineral scaling under typical pool conditions.

• Binds dissolved metals to prevent staining
• Helps inhibit calcium and mineral scale buildup
• Formulated to remain effective in chlorinated water

Can I use Blue Stuff in pools with high chlorine or in fountains?

Yes. Blue Stuff is designed to tolerate elevated chlorine levels, so it remains active where some treatments break down quickly. That makes it suitable not only for residential pools, but also for fountains and decorative water features that have varying sanitizer levels.

• Stable under higher free chlorine concentrations
• Compatible with fountains and other recirculating systems
• Safe on common pool finishes when used as directed

What is the correct dosing schedule for pools?

Begin with an initial dose to bring the product to effective levels, then follow a weekly maintenance routine. For most pools use the recommended quart-per-gallon initial dose, then maintain with smaller weekly doses to keep metals sequestered and minimize the need for reactive stain treatment.

• Initial dose: 1 quart per 10,000 gallons
• Maintenance dose: 6–8 ounces per 10,000 gallons weekly
• Test water and use a Stain ID Kit if visible stains are present first

Will Blue Stuff work on existing stains?

Blue Stuff is primarily preventive and will help stop further staining by keeping metals in solution, but it is not a targeted stain remover. If your pool shows existing discoloration, use a Stain ID Kit to identify the metal or stain type and follow with the appropriate stain-removal product before starting maintenance treatments.

• Prevents new stains, limits progression of existing ones
• Use a Stain ID Kit to diagnose visible discoloration first
• Combine with stain removers for established metal deposits

Who is this for? Pool and water-feature owners who want proactive metal control will benefit from Jack’s Magic Blue Stuff. It’s a good fit for anyone managing chlorinated pools, fountain systems or decorative water features where copper or other metals may be present—especially if you prefer a preventative product that stays effective in higher-chlorine environments. For pools already showing stains, pair Blue Stuff with the proper stain identification and removal steps to restore and then maintain a clean finish.