Hanna Groline Nutrient Dosing System 3 Gallon 30 or 36 inches of

30 or 36 inches of Super Flex Tubing and an angled barbed stake

Equipped with an electronic safety device that protects the pump from dry-running

This unit allows for minimal contact with chemicals and unparalleled simplicity of use

Affected larvae move more slowly and tend to become shriveled and discolored before dying

crafted with high-quality plant-derived ingredients and botanical extracts

Hanna Groline Nutrient Dosing System 3 Gallon 30 or 36 inches ofThe GroLine Nutrient Dosing System HI981413 by HANNA Instruments is engineered for maintaining the concentration of fertilizer in the nutrient solution used in hydroponics and irrigation water. The nutrient concentration in the water used for irrigation is critical for the successful propagation and growth of plants. Simply insert the probe and injection valve in line with the re circulation pump and provide the chemical to be dosed. Available in