Here we discuss PH, EC, and PPM:
The pH of water is a measurement of how acidic or basic it is. The range is 0 to 14, with 7 being the neutral value. Acidity is indicated by a pH less than 7, while a pH greater than 7 indicates a base. The pH of water is an extremely essential indicator of water quality.
pH is a measurement of the proportion of free hydrogen and hydroxyl ions in water. Acidic water contains more free hydrogen ions, whereas basic water contains more free hydroxyl ions.
Importance of pH
The solubility of nutrients (the amount that can be dissolved in water) and biological availability (the amount that can be used) of chemical elements like nutrients (phosphorus, nitrogen, and carbon) and heavy metals are determined by the pH of water (lead, copper, cadmium, etc.). Maintaining the right PH for the respective plants is the key to better growth and nutrient absorption. Refer to the scale below
EC is the measurement of electrical conductivity inside your nutrient solution in hydroponics. (It can also be written as CF, which stands for conductivity factor.) While examining pH levels provides a decent indication of the balance of your available nutrients, EC provides an estimate of the quantity of nutrients accessible.
Pure water has no electrical conductivity as it contains no minerals. The dissolved salts in water allow it to conduct electricity after minerals are added. The electrical conductivity increases as the concentration of salts increases. The amount of nutrients in the water can be determined by measuring this.
Generally, the EC value should be between 1.2-1.6 during the vegetative stage and 1.6-2.4 during blooming for most plants, but this can vary depending on the type of plant being grown.
Importance of EC:
When you measure the EC, you get a more thorough picture of what’s going on in your nutritional feed than if you just take a pH reading. Your EC will either stay the same, go down, or go higher with time, which is why you should measure it on a frequent basis.
If the EC value remains constant, the plant is balanced and is using as much water as it is nutrient. To maintain this equilibrium, keep the nutrient tank full up with the same strength solution, but check it often to verify everything is still working properly.
If the EC drops, it means the plant is consuming more nutrients than it can replenish. You should replenish the nutrient solution and, if necessary, try a stronger nutrient solution feed. If you do decide to raise the strength, keep an eye on the EC to see how your plant responds.
If the EC rises, your plant is utilizing more water than a nutrient and isn’t taking up as much as it should. To dilute the solution, you’ll need to add more water. Overfeeding can cause burnt leaf tips and decreased growth, and your nutrition solution may be too powerful if this is the case. Temperatures can also affect this, and your plants may require more water on hotter days.
Parts per million (ppm) is an acronym that can alternatively be represented as milligrams per liter (mg/L). The mass of a chemical or contaminant per unit volume of water is the unit of measurement. On a lab report, ppm or mg/L both mean the same thing.
pH, EC and PPM values for various plants
|Beans (Italian bush)||6.0-6.5|
|Swiss chard||6.0 6.5|
Let us know in the comment section, what plants you grow and the respective EC, pH, and ppm values