Alien Rift - DWC!!

I see some burned leaf tips, due to overnutrition and also most likely a copper deficiency. Most common reason for copper def is when the ph at the roots is not in the correct range. For hydro, a ph between 5.5 and 6.5 should be good. Copper deficiencies are likely to appear when using heavily filtered or reverse osmisis (RO) water to feed plants since any copper has been removed. Copper deficiencies can show up with the plant is having root problems or if the plant is overwatered, even if the ph is good and the copper is present in tap water and/or nutrition. In that late flowering stage there is no need to handle that anymore as your plant seems almost ready for harvest.