During week 13 all plants start to get ripe and the the fan leaves start to fade and get yellow and/or red. Its a sure sign the plants are getting closer to harvest time. The BIO-TABs nutrients are now finished, so the fade at the end of the cycle can start, perfect timing. The aroma of the plants is sweet and the smell is EXTREMELY STRONG now. All plants are covered in trichomes, especially the SERIOSA from Serious Seeds is COVERD IN CRYSTALS, it looks like a snow blanket is covering her.