[Forest]

i dont mean heat stress, light stress im meaning  250 to 1200 it a big jump and a shock to the youguns    we need a pic with normal lighting and we cant open the pic open up you album to us all

[WildRambler]

Hmm could be a few things

No need to go below 5.8, I prefer 6 meself but it looks like heat damage starting, have you light closer now its colder then added a heater

Are the tips brown or yellow they sound underfed massively with run off (do we know everything is calibrated right at mo) and leaves start to yellow at tip but can look like burn as they yellow then start dying and getting necrotic and then rest of leaf follows.

They not so bad but if your tools are all calibrated right they need feed upping are you in hard or soft water area as well

oh shit forgot to say, im in soft water area ec 0.1  ,  i calmag up to 0.3 and i always leave my water sitting 24hrs and i have a water heater in there

 

ive done this grow a few times now and always had good results, first time ive encountered this

 

and its sensei seeds jack herer

[WildRambler]

i dont mean heat stress light stress im meaning  250 to 1200 it a big jump

 

its 600 a side really and i have done it before without problems with the same strain mate

[captain beefheart]

im fuked tonight butty gis a full size pic tomorow lights out 1 see............im thinking humidity ?    laters bach

[Forest]

i would look at why you are getting such a low run off as well 

[WildRambler]

Hmm could be a few things

No need to go below 5.8, I prefer 6 meself but it looks like heat damage starting, have you light closer now its colder then added a heater

Are the tips brown or yellow they sound underfed massively with run off (do we know everything is calibrated right at mo) and leaves start to yellow at tip but can look like burn as they yellow then start dying and getting necrotic and then rest of leaf follows.

They not so bad but if your tools are all calibrated right they need feed upping are you in hard or soft water area as well

 

tips are yellow dekay, just the very tip though

 

whats best ph for coco at veg and flower mate?

[WildRambler]

i would look at why you are getting such a low run off as well 

 

i am a but puzzled cause the leaf tips look like burn but ec in runoff is very low

[WildRambler]

im fuked tonight butty gis a full size pic tomorow lights out 1 see............im thinking humidity ?    laters bach

ill try and get one tomorrow mate if im home from work before they come on

[Dekay]

I like to move mine around from 5.8 to 6, well I just settle in those ranges after adding masses of ph down now I am using silicon again, have done whole grows at 6 no probs though and allows for meter readings being wrong a couple of points either way, the ec should be coming out slightly less in times of trouble like 1 in 0.9 out and the PH obviously should rise.

They might have missed some nutrients with the low PH even though it was enough almost everything starts peaking round 5.8 onwards.

[Dekay]

To be fair wish I could see em proper lol cant see colour in em makes it all harder.