Can anyone help ?

Hello everyone,
These are my bros plants. NL#5xhaze and white rhino, first grow, 2nd week of flower, 300w cfl, bio bizz all mix soil and nutes. I think it may be either a sulphur or zinc deficiency but really am not sure. Any help much appreciated !

i dont see anything but a little bit of leaf curl which is usually related to high heat or an off pH....

What are the temps? Why is the main stem bent.

What am I looking for? I don't really see anything wrong. The downward curl could be slight over-watering but, doesn't look bad. And the super-cropped main stalk that BUDS pointed out, haha...Could be too much Nitrogen. Some of those leaves look really dark green and that also curls leaves like that.

I can sort of see yellowish new growth but with your picture, which isn't very good color-wise, it's hard to tell. Is the new growth actually really yellow? Does it green up at all after a few days? You may just need some lime in your mix. Just a pinch in those tiny pots. Sprinkle it on top and water it in. Alternately you can mix 1tbsp/gal lime and drench it in. That might just do the trick.