can anyone tell me???

Can anyone tell what's wrong with my kush

water to start....we need info...

I just read through the entire sticky in this section on def/tox and I for sure saw things in there about edges of leaves being brown like that. I'd give it a read it's super informative and well written. But as brimck said we needs the facts bud.

I wanna say a potassium issue

Sorry fellas , it's in jiffy seed starting mix only thing I had on hand Tom I will transport into promo h.p. it is only in a one gallon pot. ..... I was trying to keep it small until I finish my other project that I didn't have much luck with either. I was using cheap soil think sclutz because no grow shops around broke down and ordered off line.i feed once with Jacks bloom booster to try and give the roots a good start with 1\4th teaspoon. Once I saw that browning I thought it was nute burned and flushed it. It is actually pretty moist guess it's just the picture.the genetics are Bubba kush Kat us cut white widow and herrjuna .I will test the run off when she is ready to water or feed? I am transferring to promix hp the nutes I will be using is Jacks classic ....Jacks bloom booster .....and occasionally Jacks citrus for the extra micro nutrients. I plan on topping her using the uncle Ben method followed by 4 way lst. Not sure if I should top with it having a problem yet. I am a noob new to this but want to learn all I can lesrn.