What Is PH and EC?
In order for your plants to grow at the best possible rate and produce monster yields you will need to ensure that the PH and EC of the nutrient solution are consistently balanced to suit the stage of growth that the plant is at. To test the PH and EC values of a solution you will need measuring tools such as a PH pen or and cheaper PH test indicator and an EC pen. Using these accurate tools allows you to make sure that the nutrient solution is always precise in orer for the plants get the nutrients they need and when they need them.
What is PH?
PH is basically the measurement of acidity to alkalinity of a solution on a scale of 0 – 14 with 7 being neutral. The lower the PH value the more acidic the solution is, so a solution with a higher PH would be high in alkaline.
The PH of a nutrient solution for cannabis plants should be kept within the 5.8 – 6.2 range. You should set the PH of a solution to 5.8 so that it fluctuates it’s way up to 6.2. You should monitor the PH once or twice a day incase it ever fluctuates too low or too high unexpectedly. Before you mix a nutrient solution you should allow your water to sit in open air for around 24 hours, this allows the chlorine to evaporate from the water making it more suitable for PH adjustments.
What is EC?
EC stands for Electrical Conductivity, which is a materials potential to conduct electricity. Although as growers we are constantly measuring nutrients in ml per litre or ounce per gallon, EC is just slightly more complicated than this. It is important for growers to understand EC and know why it matters.
The more dissolved solids in water the higher the EC will be. So basically, adding more plant food to water will cause the EC to rise, this is because the more particles that are in the water the easier electrical atoms can travel through it.
The reason it is so important to have the EC of your nutrient solution under control is because if the EC is too low, you are potentially losing out on growth due to underfeeding, but if the EC of the solution is too high your plants roots will struggle to uptake nutrients. If this happens the leaves will begin to look burnt/rusty and growth will slow dramatically or even stop. To monitor EC values you will need an EC pen.