Apera Instruments GroStar GS3-E Replacement EC Electrode 1' x 8' Grow Trays & Flood Tables Air 7 (728459) comes with

Air 7 (728459) comes with 1/2 in

This ensures that the plants get what they need for a successful flowering period

The LCD is constantly digesting the waste and you can add plant waste at any time

Weight  Unit: 22 lbs

When sprayed on the leaf surface

Apera Instruments GroStar GS3-E Replacement EC Electrode 1' x 8' Grow Trays & Flood Tables Air 7 (728459) comes withGroStar GS3 E replacement EC electrode 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 1 year warranty