Helathy plant - Yellow leaves under bulb... (PICS)

Hey.
Im Growing two LSD plants under 400w HPS.
around day 50 into flowering.

they look very healthy with lots of trichomes -
but it bothers me that the leaves on the branches that are
under the bulb are all yellow :-/

the leaves on the other branchs look nice
and green and as for the buds - they look great on the branches with the
green leaves and on also the branches with the yellow leaves...

Can that be some kind of nutrition deficiency by any chance or is that
just the light sucking the hell out of my plant?

thanks for the help!!

How close are your plants to the light? An HPS bulb can and will burn up a plant if its to close. IF thats the case then the leaves closest to the light should be crispy and dry. If they are thats a sign that their to close. It's either that or somethings missing in your Nutes

NetGuruINC said:

How close are your plants to the light? An HPS bulb can and will burn up a plant if its to close. IF thats the case then the leaves closest to the light should be crispy and dry. If they are thats a sign that their to close. It's either that or somethings missing in your Nutes

Click to expand...

That's whats weird - I have experienced once already when the bulb burned the
leaves but hear it's different - the leaves look and feel healthy - they stretch nice and
the buds on them branches don't seem to be harmed at all - it's just the color of the leaves in
a certain area - the inside pare of the garden witch is right under the bulb, it's also the
part that gets the least air from the fan - can that be a reason??

Is it possibly just the plant using up the remaining N? Im on my phone and cant zoom in on the pics but this late in flowering, some yellowing leaves are normal as far as I know..

Just curious, what are your temps averaging?

melancholy said:

Is it possibly just the plant using up the remaining N? Im on my phone and cant zoom in on the pics but this late in flowering, some yellowing leaves are normal as far as I know..

Just curious, what are your temps averaging?

Click to expand...

Around 30c during the day, maybe more (Middle-east :-/ )