IMPORTANCE OF EC & PH WHEN IT COMES TO HEALTHY PLANTS

Key Factors in Optimizing Nutrient Uptake and Plant Growth

Both electrical conductivity (EC) and pH are important metrics to use when growing. EC is a way to measure salt concentration in a given solution or medium. Understanding EC helps maintain a controlled feeding regimen and to optimize plant nutrient uptake. If EC becomes too high, nutrient burn or nutrient lock out can occur. If EC falls too low, plants can potentially be underfed, inhibiting them from optimal growth.


THE OPTIMAL RANGE FOR EC IS BETWEEN 1-3 DEPENDING ON THE STAGE OF GROWTH

Growing mediums such as rockwool, coco coir or hydroponics and aeroponics require more EC than growing in soil due to their inert nature, these growing mediums do not contain any nutrients.




Growing mediums such as rockwool, coco coir or hydroponics and aeroponics require more EC than growing in soil due to their inert nature, these growing mediums do not contain any nutrients.




The optimal range for pH is 5.5 – 6.5 depending on the type of grow medium being used. If you are unsure, it’s typically safe to run pH around 5.8 – 6.2.


IN ADDITION TO TESTING PH LEVELS BE SURE TO MONITOR THE PLANTS VISUALLY AS THE PLANTS HEALTH WILL OFTEN TELL YOU IF YOU ARE OUT OF RANGE




A basic Hanna Meter can be used to measure both EC and pH (at a very specific temperature). Prior to use, the meter needs to be calibrated for both metrics.


The Hanna Meter comes with a calibration solution that has a standard unit of measurement of 1413 microsiemens at 25 degrees celsius. To calibrate the meter for EC, place the probe in a sanitized cup containing the calibration solution. A numeric reading will appear on the screen. Continue to turn the dial on the meter until the numbers read as close as possible to 1413.


Before calibrating the meter for pH, it’s important to rinse the probe off in water between various solutions. The pH calibration solution is 7.0 and is the number to dial to on the meter.


Once these steps are completed, be sure to place the probe into a hydrated probe cap. Tap water will be best for this. Using reverse osmosis water or demineralized water can leach out the solution inside the glass probe and cause damage.


Visit Hanna pH EC Meter Website


SELECTING PLANT GENETICS
Choosing the Right Traits for Optimal Yield and Resilience