Ongrok Ongrok Colour-Coded Hygrometer (6 /Pk) Tents coir substrates and coco based

coir substrates and coco based soils

Along with Bluelab pH Probe KCI Solution

Improves drainage & aeration in potting mixes

Rugged metal frame for stability when filling

Ongrok Ongrok Colour-Coded Hygrometer (6 /Pk) Tents coir substrates and coco basedOngrok Colour Coded Hygrometer (6 Pack) COMPACT DESIGN Their small size makes it easier to fit in almost everywhere! Great for use at home, office, car, schools as well as places equipped with air condition, etc. These hygrometers are also perfect for humidors, sealed jars, bags or pouches, violin or Guitar cases, wine cellars or wherever you want to track the humidity & temperature. LCD DISPLAY Our ONGROK mini digital hygrometers allow you to easily