Brown edges on leaves

[rayian]

Greetings. New grower here. I'm involved with my first grow at present. One of the plants I'm growing is a Great White Shark auto. It spent the first couple of weeks under cfl lights. Now it's outside getting 10-12 hours sunlight a day plus I supplement that with 6-8 hours of cfl. It started flowering at the end of week 3 and is now 6 1/2 weeks.

To the question. It's developed red/brown edges on one set of upper leaves. Also the leaves are curling up a lot. I gave it a good flush yesterday and from testing the run off discovered the ph to be high. Anyway, if anyone has any ideas for the cause I 'd really like to figure it out

 

[Rwise]

Did you give them an adjustment period, or just set them in the hot sunshine? Looks like sunburn

 

[9fingerleafs]

looks like a calcium deficiency, probably because of the ph out of range. once its fixed the leaves will not recover but the spotting will stop spreading

 

[rayian]

I thought that calcium deficient spotting was more random over the leaf but in this case is concentrated on the edges. Anyway, hopefully the flush has taken care of the problem

 

[rayian]

Well the adjustment period happened about 3 1/2 weeks ago

 

[9fingerleafs]

it often is but i think you are seeing the first few spots before they cover the leaf, im sure whatever it is it will get better with the ph under control