Nitrogen Deficn

Do the brown marks mean Nitrogen deficiency?
I have been vegging for 5 weeks under 2 small t-5's 24hrs waiting for my flower room to finish up under 2 150 hps.
I know they are in a fairly light grow medium with pearlight. I figure they are most likely root bound.
I gave them a small shot of Big Bloom Yesterday.

She is Sharksbreath, The Kandy Kush is doing well.

I probably need to transplant asap don't I?
any advice appreciated!

Your leaves are starting to twist, turn brown and yellow. That's a sign of P.H problems.
It's caused by iron and manganese toxicity due to low P.H.

I'd trans into a bigger and final pot while your still vegging, never trans during flowering.

Ph is always kicking my ass!

ph, ph,......vital

The main stem looks realy purple. I would say magnesium and nitrogen deficient. Probaly needs a few good feedings.....what is your feeding schedule? The light coloring at the edges of new growth is more a sign of iron deficiency.....