Active Air 3-Way Meter QuickBooks Simply fill a test-tube halfway

Simply fill a test-tube halfway with nutrient

Adjust based on plant response and system requirements

resulting in increased photosynthesis

Fishbone Meal

calibrate after cleaning or a long period of storage

Active Air 3-Way Meter QuickBooks Simply fill a test-tube halfwayActive Air 3 Way Meter Product Details Gardeners 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