leafs drying then curling

Hello my plant fan leafs are drying and curling up its affecting all my plants its starting from the bottom at works its way up some leafs look like they have been eaten! (Attached are some pics)
Humidity bettween 35-55%
Temp between 17.9 and 28.3
Fed them a weeks ago with hlaf specfied neuts (ironic grow and bloom growthtechnology.com) When i first fed them i saw signs of neut burn so i flushed them all.
Run off ph 6.4
Oh and some leafs that look healthy just randomly fall off just like the dried / eaten ones.

Can anyone help me?

Cheers
Tom

oh and i intsalled a larger fan 3 days ago but i doubt that world affect them like that but i dunno.
Oh and almost all leasfs are affected please help

Can anyone help me please there gettin worse!

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As I don't see the whole plant I can't be sure but it might just be some root bound... If your plant is getting taller and bigger and it still in a small container the roots might be stock at the end of the pot, you may need to transplant... I'm NOT sure this is the problem but it's my 1st guess. Try to check this little guide I've made

I'm pretty sure lucifer is right, I had the exact same problem, and after I transplanted they became healthier, however, some still died. So I would suggest doing it asap.

duznt matter now mate the lighting rigs flattened it
went out 4 a piss heard a band and its like fukin flat exotic xmas tree!
so ive taken 2 cuttings which is in the new compost i got
havent used rooting hormone got none
could really do with some seeds?hint
lol

E-indoor or outdoor - indoor
E-soil, soilless, coco, aero, or hydroponic - soil
E-specific medium - Grow shop soil with added perlite
CSL-Soil type/brand - grow shop
SCLR-Soil or slab runoff pH - 6.4
E-Water source - tap
E-Source water pH - 7.1
E-Age of plant - about 4 weeks into flowering
E-Type of fertilizer - Ironic grow and bloom
E-Lighting source and distance from plant tallest 4inch smallest 1/2 foot
E-Air temperature (both day and night if you are running a dark period) -17.9 - 28.3
E-Air % Relative humidity - between 35-55%
E-Lighting schedule - 12/12
E-Type of ventilation your room has - 16" ocoilating fan

Do look like they may need to be transplanted actually could this cause this?

Quote:

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Originally Posted by tomcromp

Do look like they may need to be transplanted actually could this cause this?

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Yes actually a plant with root bound will start to die, if you check my old dream you will see at the end my plants where stating to die due to root bound...

is there anyway to stop it from being root bound like cutting the roots or something as i dont have room for bigger pots

anyone?