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dissolves directly and is extremely suitable for growing with recirculating hydroponic systems
It features a reinforced ribbed design to stand up to the rigors of commercial growing
Stops Pipe and Valve Freeze Down to -40°F
Three square air inlets at bottom
Stealthiness is key when you constantly have relatives or family stopping by
Apera Instruments GroStar GS3 EC Pen Mylar & Reflective Coverings dissolves directly and is extremelyLab grade instruments designed specifically for growers! The GS3 EC Pen 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 screen gives you clear
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