Possible potassium or magnesium deficiency ?

J

juanhio

New Member
So I have two plants in veg. 24 days old. Went from 16/8 to 18/6 a week ago (under a single 65W 6400K cfl). I water them when the soil gets dry, they're in plastic 7 oz cups. Not using any nutes. Couple days ago I noticed yellowing of the pre leaves, now their tips are dark brown, pointing downwards and the rest of the leaves is yellow. It's even starting to affect the first set of true leaves. I believe this is either a potassium or a magnesium deficiency. The stem is quite stretched cause I kept the cfl like 6" away for the first week.
I'll post pics once I find my usb cable.
I'll give them some nutes anyway, and can I give them some magnesium oxide ? Will they absorb it ? and how much ? (We don't have epsom salts here...)
 
333maxwell

333maxwell

Active Member
No.,. Unless you planted it in sand, you are too young in to be having either of those deficiencies.

Check your PH.. pictures? If you haven't used any nutes yet, she is perhaps telling you how hungry she is.. use a light dose of all purpose and watch her go me thinks.

EDIT.. oh, and your 'pre leves' will turn hard and fall off..
 
333maxwell

333maxwell

Active Member
The little round 'pre leaves'.. they should of been gone already.. you probably took too good of care of them and they tried to stick around extra,. ;-)
 
333maxwell

333maxwell

Active Member
Looks good.. those stems are just perfect to tie that sucker over and let her start growing from the sides.. Just one thought.
 
Jimdamick

Jimdamick

Well-Known Member
It looks like a N def. Transplant them soon, and start a light feeding schedule. Like 333maxwell stated, they are to young to be cal/mag def. Peace
 
J

juanhio

New Member
I actually don't wanna do lst or anything, ima just let them grow so I can take clones and put them clones in flower. I hope I get at least one hoe. I think I might germinate more seeds...
 
You must log in or register to reply here.
Top