BioGuard Instant Stabilizer 100 - 1 Gallon frog It works with SmartChlor to

It works with SmartChlor to help maintain cleaner

500 gallons Pool Compatibility Suitable for all pool types Use Case Superchlorination

Insert New FROG Mineral Cartridge: Place the pre-filled mineral reservoir into the cycler—no mess

Cycler Required: Must be used within a Pool FROG 6100 cycler (sold separately)  for best results

Buffered for water balance: Helps reduce pH bounce during routine shock treatment

BioGuard Instant Stabilizer 100 - 1 Gallon frog It works with SmartChlor toBioGuard Instant Stabilizer 100 1 Gallon Fast, Easy Chlorine Protection for Outdoor Pools BioGuard Instant Stabilizer 100 is a quick dissolving liquid pool stabilizer designed to help protect free chlorine from being broken down by sunlight. If your outdoor pool is losing sanitizer too quickly, especially during sunny weather, this liquid conditioner helps improve chlorine efficiency so your pool water stays better protected between routine