any idea what's wrong super lemon haze

[mr.green123]

ok I'm 4 weeks in to 12/12 and some leaves are dieing off and turning a very light green/yellow colour i thought it was a mg deficiency so i watered with Epsom salts about a week ago and she's still burning up leaves i'm feeding with biobizz grow,bloom,topmax and canna pk13/14 medium is biobizz allmix and ppm has never gone above 650ppm any ideas

 

[Frame]

If yellowing starts from the tip back, you might be running into some nitrogen def. Drop the Epson salt. If nitrogen is too low it might start taking its nitrogen source from older fan leaves..

 

[mr.green123]

If yellowing starts from the tip back, you might be running into some nitrogen def. Drop the Epson salt. If nitrogen is too low it might start taking its nitrogen source from older fan leaves..

but i do water with bio grow for N every other watering

 

[Frame]

How much are you feeding it every other watering? Have you checked your ph?

 

[Frame]

I know sativas usually take longer to flower, plants usually reach a N def when nearing the end. Either you are close to harvest if not it means it might need a lil more nitrogen for its long flowering cycle.

 

[Frame]

Oh idk about others, but she looks awesome.

 

[*BUDS]

canna pk13/14

Its N def. Replace the PK with canna flores.

 

[mr.green123]

Oh idk about others, but she looks awesome.

thanks for your help mate +rep

 

[mr.green123]

Its N def. Replace the PK with canna flores.

thanks for your help mate i've cut out the pk for now and i've started adding canna nitrogen how long do you think it will take to start recovering

 

[ghb]

cal/mag, super lemon haze is reknown for needing and extra boost

 

[mr.green123]

cal/mag, super lemon haze is reknown for needing and extra boost

i've watered with epsom salts and still no better