Thanks for the responses all. Leaves (no pun intended) me in something of a quandary though. According to my calculations my pots are approx. 6.75 liters, or about 1.75 gal., so they are clearly not big enough, and I was lied to. I thought they looked a little small. Anyway, I'm not going to use them anymore, but what to do with this group of plants? I don't want to stress them unduly by transplanting them unnecessarily, but I also don't want to reduce my yield too much, or worse, allow the problem to get bad enough that they stop bud production completely for lack of carbs because of lack of chlorophyl. I'm going to buy some 5 gallon grow bags (.28 per, disposable, screw it) but haven't decided whether to transplant all, just the worst, or none. In the meantime I prepared a weak nutrient solution to foliar feed them to see if I can reverse the yellowing a little. My grow store should get more bags this pm, along with the soil I will need to make up the difference in volume (they were out of that too yesterday).' Shake, when I put these into flower, I actually did about what you suggest, except it was one third bloom, 2 thirds grow the first week, then half and half the 2nd. This is the first week of all bloom nutes, which in the case of what I'm using are by no means devoid of nitrogen, so I thought they would be ok. Who knows. I knew this was going to be a learning process, but damn!