I never said it wasn't what people are saying, I'm simply trying to get opinions on the subject. Some people say to feed coco lightly from day 1 and others say not to feed until the first leaves start to yellow. Some people say to water daily others say not to water for a week.
Because of this I am trying to get opinions on what the cause is, you don't seem to have opinions....you seem to feel that what you say is fact while others disagree with you. I do not have enough experience to disagree with you, but something I have learned in my professional life is that 1 opinion does not mean it is fact.
My ph is 5.9, I am feeding at less than 1/2 the rate recommended for seedlings at every second watering. Water is at a PH of 6.2.