plant problem, please help! pics provided

not sure whats wrong, not really up to date with allot of plant problems,

started nutriant feed a few days ago but a really weak mix,

like 2ml per 2lt insted of 10... just to get it started. also spraying plant with plain water when lights off,

any ideas as to what is wrong? thanks in advance.

Looks underfed to me. Is that a heater right behind it? Your not blowing hot air directly onto them are you?
They look large enough for a healthy dose of ferts to me.

they look a little hungry to me too ... i'd up your ferts to at least 1/2 dosage and go from there

happy growin

Either under fed or nute lockout, what's your PPM AND Ph?

no its a box fan behind, feeding canna terra vega.. and ye scared to feed it full ammount dont wona fuk it up, its guna be my mother.. ph is about 6.1.. its under a 400w hps bulb at moment goin up 400 super,then 600 soon cos i have a veriable ballest.., got duct onto shade suckin hot air away, grow room stays at roughly 26-28c while lights on and 18 when its off... temp on last pic is low cos lights just come on..

understand about not wanting to go full strength ... i always start 1/2 strength and work up slowly ..

happy growin

What's your PPM?

soz mate forgot, 850

Looks like mover water when and how often do you water???

I agree with the crew. looks like you need more H2O