leaf tips curlin under

my leaf tips are pointing straight down. just the tips. any ideas??

my bud is having similar probs, still growing but leaf tips pointing down..........he has them in ebb & flow using GH nutes.....

i think its prolly from too many nutrients but i just want to be sure.

Overferting, abnormal ph and heat stress are three things that I think of right away.

are the tips burnt? like posted above those would be most common problems. but if the tips are burnt most likely over fertalized.

ya so i now know its because i have to much nitrogen in my soil. whats the best way to fix this problem?

Get new soil and transplant the plants, or leach the soil (poor water until mostly filled discard the water that comes out the bottom.

I've been having the same symptoms. I'm glad I read this thread. So if its too much nutes, ph imbalance, or heat stress.....I should be able to use the good ol process of elimination.