ODC organic Super Concentrated - New 1.2 fl oz bottle for trees, gardens, orchards, nurseries, greenhouse, & lawns. Made from aquatic materials - shellfish - natural source of (N). MAKES 2,635 gallons of ready to use solution. 5x more concentrated.

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

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

This liquid pH adjuster (UP) is specially formulated for increasing the pH of an aeroponic nutrient solution. 18 fl. oz. (532 ml))bottle

AgriHouse's NASA sponsored Leaf Sensor Rev4 for all plants. It knows when to water. Water resistant low power device. Easy to use. Measures plant water levels using a digital multimeter or data logger for precision irrigation control.