I normally try not to get involved in thread derailment, but since I started the thread and it has been derailed the entire time....
I don't know how you can see mold on those buds. If that is the case, well then, I can't see it myself but my eyes aren't what they used to be...
As far as yellowing...
I believe in the very old saying "jack of all trades, master of none".
A good botanist can grow good tomatoes, peaches, oranges, azaelas, cannabis, tulips, shrubs, etc.etc.etc.
and each and everyone of them would be good.
A specialty grower, in this case cannabis, will tweak his grows specifically for cannabis.
While this doesn't apply to all the other stuff that a botanist can grow well, it does for cannabis.
I know this is the politics section and facts generally do not apply or actually convert the debaters, but....
Higher nitrogen levels at the end of flowering results in lower thc levels. That is a fact, scientifically proven.
When you get to a certain stage of growing, which isn't really difficult, you will not make leaps and bounds improvements. You are already past that point. At that stage the only way to improve is to make small tweaks which make even smaller improvements. But those small tweaks keep adding up until you actually can tell a small but discernable difference.
Feel free to confirm what I have said. There are studies.
Higher the nitrogen level at the end of flowering, the lower the THC levels.
These studies were done in a way to LOWER thc levels in hemp, so if you are growing hemp you would want HIGH nitrogen levels to lower the thc percentage and increase stem growth.
So in conclusion, if your leaves aren't yellowing at the end of flower, you can improve your overall bud quality. Unless you are growing hemp for the stems.