The following procedure must be followed for using electronic conductivity (EC probe) to add fertilizer to plants:
- Refill the nutrient barrel with either tap water or filtered water, and thereafter add fertilizer. Follow the manufacturer's instructions to determine the correct amount (see to the table below for specific recommendations for each crop).
- Employ the buffer solution to calibrate the EC meter probe.
- Thoroughly mix the nutrient solution and wait for the number to stabilize.
- This process may require a few minutes.4.If the value exceeds the optimal threshold, augment the amount of water to dilute the mixture, and subsequently repeat step 3.
- If the reading falls below the optimal level, supplement with nutritional concentrate until the optimal level is achieved.6.Rinse the probe with tap water and store it in probe-cleaning fluid.
The following procedure must be followed for using pH probe to add fertilizer to plants:
- Specify the target electrical conductivity (EC) value for the solution.
- Adjust the pH meter probe by using the buffer solution to ensure accurate measurements. Ensure that the nutrient solution is thoroughly mixed and wait for the measurement to reach a steady state, which may need a few minutes.
- If the pH value is above, gradually introduce phosphoric acid, citric acid, vinegar, or pH lowering products. Allow a few minutes to elapse before adding additional items. Continue the process until the pH level reaches the optimal range.
- In the case of a low pH, gradually introduce potassium hydroxide, potassium carbonate, or a pH up solution. Continue the process until the pH level reaches the ideal range.
- Thoroughly clean the probe and place it in a container of cleaning fluid for storage.
