bottum 2 leaves on every plant

The bottum two leaves on every plant are starting to yellow.

They are NOT turning brown, drying up, patching etc. They are simply just fading green to yellow.

Is that a phosphurous deffeciency or a Nitrogen deffeciency?

Thanks for any help.

I did a quick search through the past posts/threads - don't have time to go in depth.

It sounds like they need more nitrogen or magnesium

Are you flowering?If so..this is natural.Plants sacrifice sun leaves to make flowers.

A plants leaves will only die in flowering if they are not fed enough nitrogen. A healthy and correctly fed plant will have all of their leaves until harvest day

I thought it was Nitrogen. I am going to feed ita little more nitrogen in this next feeding thanks
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