I have 2 wwxbb that are like 7 weeks in and I know leafs are going to turn yellow but I been feeding them and just dont seem to help ill post pics also they a few leafs are turning purple what can I give them to help also I have a few plants that I I just switched to flower maybe week and the leafs are starting to yellow no with brown edges and I also been feeding them general hydroponics and my pH has been at 6.2,6,3 using soil under 24 cobs