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TrolMaster 3-in-1 Water Content Sensor (WCS-2) The WCS-2 Water Content Sensor provides the users with an accurate and simple way to monitor your grow medium
The 16" Clear Top model features a clear plastic top for better visibility and a removable handle for convenient storage
The printed scale stops at 60%
15 cm L x 1
Loose cases ship with no wrapper and no cards
Humboldt Sea Cal 2-0-0 -- 2.5 Gallon AutoCure TrolMaster 3-in-1 Water Content SensorSea Cal is a highly concentrated growth enhancer and chelated calcium supplement that offers vital macro and micro nutrients in specific ratios during early plant development. Calcium is very important during a plant's vegetative cycle, controlling aspects of cell wall structure and permeability. Calcium is absorbed into a plant through the root tips, but plants are not always able to completely satisfy their need for calcium through their roots. This