Active Air 3-Way Meter Alfalfa Meal It can be used throughout

It can be used throughout the vegetative growth stage and in early flower stage to continue to promote root development

Ideal for use on vertical or irregular surfaces

Alternative to potting soil

Each unit has a user-friendly temperature system that allows you to control your desired temperature range as needed

Comes with a 6 ft power cord (240 V)

Active Air 3-Way Meter Alfalfa Meal It can be used throughoutGardeners can conveniently test their moisture, light, and pH levels with the handy Active Air 3 Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist); light readings range from 0 LUX (low light) to 2000 LUX (very strong light); accurate pH readings range between pH 3. 5 and 8. The durable, easy to read tester is suitable for indoors or out and needs no batteries to operate. Remove from soil and clean prongs after each use to