GroStar GS3 EC Pen complete-systems the Max-Fan can save hundreds

the Max-Fan can save hundreds of dollars every year

soil fertility

shake and let sit for 30-120 minutes

The GrowBoss is a constant monitoring meter that indicates to the grower the exact levels of nutrient strength

9" electrical cord

GroStar GS3 EC Pen complete-systems the Max-Fan can save hundredsAI11030 GroStar GS3 EC PPM Temp Pen Lab grade instruments designed specifically for growers! Includes: 2. 77 EC calibration solution (50 ml bottle) Measures conductivity EC, PPM (500), PPM (700) and temperature Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Titanium alloy sensor designed for high accuracy EC measurement Easy to use design and fast calibration adjustment. Large 3 color backlit