Ongrok Ongrok Colour-Coded Hygrometer (6 /Pk) Pots and Trays Plugs have a tapered bottom

Plugs have a tapered bottom

It can be used during in all stages of growth

1 pH/1ˆC/1ˆF

10mm) thick

Calcium (Ca)………………

Ongrok Ongrok Colour-Coded Hygrometer (6 /Pk) Pots and Trays Plugs have a tapered bottomOngrok 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