Leisure Time Test Strips | 4-in-1 Spa Test Type_Ozone Generator The signal that you need

The signal that you need an immediate purge: black or grey flakes appearing in the water when jets fire up for the first time

of Drop N Vac per 10

This laser-guided

no anti-caking agents

Leisure Time Test Strips | 4-in-1 Spa Test Type_Ozone Generator The signal that you needLeisure Time Test Strips are 4 in 1 spa water test strips that measure the four readings that matter most for hot tub care: free chlorine or bromine, pH, total alkalinity, and total hardness. One strip, two seconds in the water, and you have the complete picture of your spa's chemistry the same information professional service techs charge $30 a visit to deliver. Each bottle contains 50 strips packed in a patented PopTop container that blocks UV light