Chow_13answered grow question 2 years ago Your in coco so add PH water to the plant and collect the runoff. If the PH is within range then check your EC/PPM value and compare it to your feed EC/PPM value to know if your under or over feeding.
If the PH is out of range then you need to keep watering with PH water until the runoff water is back to the value you want it to be (5.8-6.2) and then feed since you will of washed out all food.