Keith, you know there are no rules, just environmental factors that can play different roles from one grow to the other.. It's when advice is communicated from a book, that'll make me stop reading or unsub, we can all read books.. It's experience that makes us say, this is what I do ............ Works for me but might not in your circumstance... Thanks for joining..hope you do start a journal or helping with advice, sounds like you know what's going on... Those who argue with that advice, well why are they needing it in the first place