2 babies

[SilentStoner]

one plant leaves tacoing. the other plants center is turning yellowish.
what could be the issue?

[Mr. Clandestine]

I've seen this happen with overfertilization, especially ferts with high Nitrogen, but without knowing anything about your grow, it's impossible to say for sure. Fill out the Troubleshooting Form (http://boards.cannabis.com/plant-problems/127058-troubleshooting-form-yay-you-know-you-wanted-one.html) and you'll get more detailed answers from more people.