OK, here's a couple pics of my yellowing. These are sour diesels (70-75 day) and Mr Nice (70 days) and they're almost entirely yellow now at day 46. The small sugar leaves still appear to be green, but it looks like on Mr Nice even the sugar leaves may be slightly yellowing.... the Mr Nice was definitely affected by root aphids, but not sure on the sour diesels. I think they were as one has slowed down significantly on the amount of water it needs.