GroStar GS3 EC Pen books-&-videos Well suited for low-light growing

Well suited for low-light growing conditions and high humidity

This water- soluble blend can easily be applied to an entire yard

System box size:

Set the pH value to 5

watered automatically

GroStar GS3 EC Pen books-&-videos Well suited for low-light growingAI11030 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