I'm sorry I didn't mean to offend you but you stated early you are unfamilar with a coco grow, that is what I'm growing in, a 6.5 ph would def cause lock out. I'm here to make friends and find answers, not the other way. I respect your input I see the amount of post you have, so don't take it as an insult. I'm just posting all the info so those more knowledgeable can help.
I just flushed 2 plants and the run off was 6.2, 1 gallon of 5.8 ph water. It kinda bothers me you said you won't be back I don't understand, I really appreciate your help , I am a Newb no doubt about it. Thanks