3 in 1 Digital pH, TDS, & Temperature Water Quality Monitor Pen winter layer with a 15A circuit breaker

with a 15A circuit breaker for each outlet pair

Contains kelp and yucca extract

and kelp meal

Choose the size that will work with your ducting size

3 in 1 Digital pH, TDS, & Temperature Water Quality Monitor Pen winter layer with a 15A circuit breaker3 in 1 Digital pH, TDS & Temperature Meter Precision Water Testing Made Easy Dial in your water quality with confidence. This 3 in 1 Digital pH, TDS, and Temperature Tester is an essential tool for hydroponic, aquaponic, and soil based growers who want healthier plants and consistent results. Perfect for Hydroponics & AquaponicsWater chemistry matters. This pen style tester allows you to quickly and accurately measure pH, total dissolved solids (TDS),