change in color of the leaves
 

hey ron, i have an emilys garden by hydrofarm.i am trying to grow all sorts of vegetables in a 2'X4' closet. recently i have noticed that the second pair of leaves+the cotyledon are turning yellow.i have checked the ph and its at 6.0. is the change in color of the leaves a bad sign?

I have never grown plants without the lower leaves turning yellow. Just pinch all the bad leaves off and as long as your new growth is healthy they should be OK. Make sure your nutrient solution isn't to high because that will turn your plants yellow also.
Ron