Just an FYI you posted this already in here, and sorry but I can't help you with that one, that appears to be a very well developed problem.. how long as this been going on for? Your plants look fairly mature but it seems excessive to just be the change in leaf color at the end of their flowering cycle, plus it looks too white/light colored instead of yellow/browning/drying.

In order for anyone here to help you out with that problem you'll need to post more information and more pictures. Information such as plant age, what you grow in/how you grow, lights, nutrient cycles, soil/water/medium ph, and anything else specific would be a good start. Most of the time if you don't post enough info to identify the problem, people are unable to help you, so they won't reply to your post. Otherwise they might give you the wrong advice and end up harming your garden instead of helping, and nobody wants to be responsible for that. So gather up at least the stuff that I mentioned above and post that here, and from there we can look into your problem. If you can be accurate and descriptive, then I'll guarantee you that someone here will have the knowledge to help you along the way. Theres some smart people here but the smartest people still need the proper info to start from.