What soil you using? Does your soil have nutes already mixed in?

Nitrogen usually leaves the leaves when there is a deficiency in the root zone. It starts at the tips and then drains the rest of the leaf, all the way to the stem. Might be an N deficiency but it could be other factors as well..... I don't think it would hurt to give a light dose of nutes to see if that helps...

Got any pics? They'd help....

CGI::::::