My tap is PH'd at 6.0 and my run off is 5.8.....weird how that works. Im learnin a ton as i go. Im pretty sure my problem was too much humidity because once I killed the humidifier the leaves flattened out and they took off.
They are looking much happier. Don't worry about your runoff PH, it is normal for it to be a little lower. If it starts dropping noticeably lower you may want to do a mild flush but I would guess you won't be dealing with that for a while.