I'm not so sure. What you say makes sense, except for the fact that the yellowing has been going on for at least four weeks now. I only put the extra 2 in 10 days late. If your theory were correct the extra 2 should have started to yellow at least 2 weeks ago. Or am I missing something?

To date, still no sign of yellowing what so ever on the 2 SuperPlants. 50 days now. Any other ideas?
Opie Yutts Reviewed by Opie Yutts on . Did stress during cloning make these 2 better? This is AK47 in day 47 of flower. Coincidence? The leaves are getting pretty yellow on 6 plants, but not on 2. Why? The two healthy-looking ones in the middle of the scrog are identical in every way, except for what happened to them during cloning. All plants get the same nutrients pumped from one reservoir on one timer. As far as I can tell all plants exist in identical conditions. All plants are from one mother. Here's the difference: I thought that I was not going to use those 2, so Rating: 5