The AquaZerve® drains a small amount of water each day and the old water is diverted to irrigation without the traditional waste of periodically draining the pool. Our patented design provides safe and effective control of TDS and retains the quality of water to a sparkling appearance and eye and skin irritation becomes a thing in the past. Extends life of equipment, staining will be reduced and less chemical usage. Designed to be small, inexpensive, and effective, the AquaZerve® has proven to be an excellent solution for controlling your pool water without draining.