To each there own....but I think week three is the perfect time to trim all the fluff that will not be of any use in the end(except the trim pile), and will take away important nutes and energy that the plant needs for the canopy.
The stretch is finished.....which I think is very important...
I have used them outdoors...and they work great. They are just a big Hempy bucket with a different shape. I plan on doing a run with them indoors this winter.
I may be new here...but not new to growing....and I've been growing in coco for a few years. Hempy bucket is my preferred method for ease of use and results. Some good info above...but here is one of the better articles I have read about coco. Alot of the old coco articles were written before...