Brondells new Perfect Flush technology retrofits any toilet into a dual-flush high-efficiency toilet. According to the company, the Perfect Flush system can be installed in less than 30 minutes and reduces a toilets water consumption by 30% to 50%. It offers a full or half flush; a half flush uses an estimated 0.8 gallons of water, compared to the 1.6 gallons used per flush by a standard toilet. brondell.com

Brondell’s new Perfect Flush technology retrofits any toilet into a dual-flush high-efficiency toilet. According to the company, the Perfect Flush system can be installed in less than 30 minutes and reduces a toilet’s water consumption by 30% to 50%. It offers a full or half flush; a half flush uses an estimated 0.8 gallons of water, compared to the 1.6 gallons used per flush by a standard toilet.
brondell.com