Leaf Sensor Rev4- Digital Meter - Calibration Combo pak II for leaf sensor voltage readings - no external battery required. Special cable connects directly to a leaf sensor. Ready use. Includes Leaf Sensor, Digital Meter, Calibration std card and cable

1/4" ID Black Vinyl Tubing - Low pressure - 10 ft for algae free nutrient delivery. Perfect for effluent return lines.

1 fl oz ODC™ Home & Garden Colloidal chitosan solution for trees & plants. Induce them to defend against pine beetles. Treats 10 to 30 trees. Natural & Organic. Easy to use. Bedding plants, flowers, roses, cannabis & vegetables. Order now limited supply!

16 Fluid oz. ODC™ colloidal chitosan solution for trees and plants. Homeopathic plant and tree remedy. Treats over 150 pines trees and acres of lawn. SAVE - Volume Discount - less than $.49 per dose/tree. Order now limited supply!

Calibration Standard Card for calibration the Leaf Sensors -contains 1 ea. graduated calibrated micro-thin disks. Track voltage / inches (mm).