FROG® BAM's unique formula will keep algae from forming for 90 days whether you have an in ground or above ground swimming pool. Combined with the mineral effectiveness of POOL FROG® and at least 0.5 ppm of chlorine, you'll enjoy months of algae free pool water! No Staining! FROG® BAM™ contains a low 3% copper complex (considerably lower than any other algaestats) that is specially formulated to stay in suspension for the full 90 days. This unique formula has no staining potential like other copper additives. No Measuring! FROG® BAM™ was designed to be dispensed through the POOL FROG® System for even distribution throughout the pool over the 90 minute time period. No Problem! King Technology, Inc. guarantees FROG® BAM™ for a period of 90 days to eliminate algae from in ground or above ground swimming pools when used properly with the POOL FROG® Mineral System Pool Frog BAM Algaecide for up to 15,000 gallon pools use one cartridge.