Manufacturer Description

Check A Leak works in all types of pools, spas, & ornamental ponds. Easy to use, accurate, saves water, saves chemicals, prevents costly repairs, and most of all,… saves you money! Automatically compensates for rain and evaporation.

This product is developed out of decades of experience and helping tens of thousands of families deal with the age old question: "Is it leaking, or is it evaporation?" Check-A-Leak serves a multitude of purposes.