BioGuard Stabilizer 100 - 5 lb

Long-Lasting Chlorine Protection for Outdoor Pools

BioGuard Stabilizer 100 is a granular chlorine stabilizer designed to help protect free chlorine from sunlight loss in outdoor swimming pools. By helping maintain the proper stabilizer level, it allows chlorine to stay active longer, which can reduce sanitizer waste and support clearer, more consistent pool water.

This 5 lb bottle is a strong choice for pool owners who want a reliable cyanuric acid pool stabilizer for routine water balancing, seasonal start-up, or correcting low CYA levels. It is especially useful for outdoor chlorinated pools where UV exposure can quickly reduce chlorine levels and increase chemical demand.

Key Benefits

• Helps prevent chlorine loss from sunlight: Protects free chlorine residual from UV breakdown in outdoor pools.

• Supports better sanitizer efficiency: Helps chlorine remain effective longer between treatments.

• May reduce chlorine consumption: Proper stabilizer levels can help lower the amount of chlorine needed to maintain clean water.

• Granular, soluble formula: Designed to dissolve into pool water when applied according to label directions.

• Useful for chlorine generator pools: Helps support chlorine generator efficiency when stabilizer levels are properly maintained.

• Ideal for outdoor chlorinated pools: Made for pool owners managing sunlight exposure, sanitizer loss, and routine pool water balance.

Product Details

Compatibility and Requirements

BioGuard Stabilizer 100 is intended for outdoor chlorinated swimming pools. It is used to raise cyanuric acid, also called CYA, conditioner, or stabilizer, so chlorine is better protected from sunlight.

Use this product only after testing pool water to determine the current stabilizer level. Follow the product label and your pool professional’s recommendations to avoid over-stabilizing the water, since excessive CYA can reduce chlorine effectiveness.

How to Use

Test your pool water first to confirm that stabilizer is needed. As a general application reference, 1 lb of BioGuard Stabilizer 100 per 3,000 gallons of pool water provides an initial stabilizer level of approximately 40 ppm, while 1 lb per 4,000 gallons provides an initial stabilizer level of approximately 30 ppm.

Broadcast the product directly over the pool surface, scattering it evenly across the water. For pools with plastic piping, it may also be slowly added through the skimmer. Keep the water circulating continuously for 24 hours after application, and do not backwash for 48 hours after adding the product.

Frequently Asked Questions

What does BioGuard Stabilizer 100 do?

BioGuard Stabilizer 100 helps protect free chlorine from sunlight, reducing UV-related chlorine loss in outdoor swimming pools.

Is Stabilizer 100 the same as cyanuric acid?

Yes. Pool stabilizer, CYA, chlorine conditioner, and cyanuric acid are commonly used terms for products that help protect chlorine from sunlight.

Can this be used in above-ground and in-ground pools?

It is intended for outdoor chlorinated pools. Always follow the product label and confirm suitability for your specific pool system.

Does this help reduce chlorine use?

Yes. By helping protect chlorine from sunlight, proper stabilizer levels can reduce chlorine consumption and help lower routine maintenance demands.

Can this be used with a chlorine generator?

Yes. Stabilizer 100 is commonly positioned as helpful for improving chlorine generator efficiency when used as directed and maintained within the proper CYA range.