Using the Hydrofarm® Active Air 3-Way Meter, gardeners can conveniently test moisture, light, and pH levels with one tool! The durable, easy-to-read tester is suitable for indoor or outdoor use and needs no batteries to operate. Remove from soil and clean prongs after each use to ensure the moisture meter stays in top performance shape.
- Moisture readings range: 0 (dry) to 10 (moist)
- Light readings range: 0 (low light) to 2000 (very strong light)
- pH readings accurate range: 4 to 8