Yellow leaf edges pls HELP!!

Hi all ! first time grower need's your wisdom!

This is day 7 under MH lights..temp 27-29c EC 1.2 18/6 lights cycle Humidity is 40%..

I've noticed the edges of the leaves on one plant starting to go yellow:wtf:? any suggestions as to why?

Cheers

You need to fill out the trouble shooting form in the future...but, it looks like the little girl needs CALMAG!

Good Luck:thumbsup:

Hmm I've never dealt in EC before, usually PPM, but are you feeding them nutes? If so you shouldn't be yet, and your yellowing is probably overfeeding. Or maybe your pH, since you didn't list it. Fill out a TSF (http://boards.cannabis.com/plant-pro...ing-forms.html) and you will get more help.

Is that string holding the stem up?? How old is this poor lil thing?? cut the nutes and get a small fan on that thing to help build that stem up. Nutes if any should be no more than 1/4 reg strength.

Welcome Back Marty :jointsmile: