First Grow / LED / White Widow

these are the latest pics around 40 or so days in flower

sorry for the mix and overload of pics just wanted to dump all my files here so they can be seen. opinions tips and yield predictions are welcome def appreciate all the input i have received so far and hope to get more info and opinions os that i can learn even more...let me know what you all think!!

You rocked it

Anyone tell me if these trichs are clear or milky? I'm only at around 50 days in flower and I'm starting to wonder if these are close to harvest? Let me know what you guys think is the remaining timeframe till I should chop?

The leaves just started yellowing between yesterday and today could it be because it's close to harvest or is there a bigger problem?

Few pics from before the leaves showed any yellowing...

They have only gotten plain PhD distilled water on the last feed...should these be flushed?

cmon RIU i know someones got some input for me!!!