Load video: SpaGuard® Rapid-Dissolve Stain & Scale Tabs – 1.25 lb Metal-Free Formula

SpaGuard® Rapid-Dissolve Stain & Scale Tabs – 1.25 lb Metal-Free Formula

Name: SpaGuard® Rapid-Dissolve Stain & Scale Tabs – 1.25 lb Metal-Free Formula
Brand: BioLab, Inc.
SKU: 42663BIO
Price: 30.99 USD
Availability: InStock

Type: Clarifier

SKU: 42663BIO

$30.99

$30.99 ~~$0.00~~

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The SpaGuard® Rapid-Dissolve Stain & Scale Tabs (SKU 42663BIO) offer effervescent, fast-dissolving tablets designed specifically for spas and hot tubs to combat metal staining and calcium scale formation.
Each tab delivers active stain- and scale-inhibiting agents weekly so that one bottle can treat an average-sized spa for approximately 12 weeks.
Designed for spa and swim-spa use, one 1″ tablet per ~300 gallons of water is recommended weekly to maintain surface and equipment protection.
The metal-free formula helps protect finishes and circulation equipment from iron, copper and manganese stains, as well as calcium scale buildup—providing an added layer of maintenance ease.
Compatible with typical spa sanitizing systems; maintain proper water balance (pH, alkalinity, calcium hardness) for optimal performance of the tabs.

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30 Day Return Policy (15% restocking fee)

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Compatability

Directions

Test spa water to ensure pH, alkalinity and hardness are within manufacturer-recommended ranges.

With circulation running, place one 1″ tab per ~300 gallons of spa water into the filter compartment (or directly into water if specified).

For existing stains, gently brush affected areas after adding a tab.

Rinse or clean filter monthly or per instructions to maintain effectiveness.

Retest water weekly and keep using one tab weekly to maintain protection.

FAQ

Q: How often should I use these tabs?

A: Use one tab per ~300 gallons weekly to maintain protection and treat an average spa up to 12 weeks from one bottle.

Q: Do they remove existing stains?

A: They are formulated to help remove some fresh stains when combined with brushing, but their primary purpose is preventive control.

Q: Are these safe for all spa finishes and equipment?

A: Yes — designed for use in spas and swim spas, safe on typical surfaces and compatible with sanitizing systems, provided water is properly balanced.

Q: What does “metal-free formula” mean?

A: It indicates that the product uses metal-free chemical technology to prevent staining and scaling, without introducing heavier metal-based inhibitors.

Q: Will I still need other chemicals?

A: Yes — this tab is for stain & scale control. You must continue to maintain proper sanitizer, pH, alkalinity and other water care practices for full spa care.