N deficiency, pH or maybe heat stress??? PICS Included

zykster

Member
So I will give details first and then pictures.

250watt HPS on 12-12, 6th day of flowering

not using nutes, but I did give them 1tsp/gal FF grow big, and 1tbsp/gal FF Big Bloom once a month (almost) because I was using FF Ocean Forest and its pretty strong on the nutes.

Temp stays at 78-80 and plants are 5 inches from light, which is not hot.

2 weeks ago my plants were showing signs of magnesium deficiency (i.e. yellowing of leaves from the outside towards the inside with burning of the leaf tips). I used epsom salts to account for this and fed 1tsp/gal epsom salts twice (with pure waterings in between) and that seemed to take care of my magnesium problem. Almost immediately my newest growth started turning very lime green and looking pretty pathetic and scrawny (as you will see in the pics).

Any ideas? I was thinking N deficiency (going to try foliar feeding to see if that helps), but then I was thinking maybe pH is too low and that is causing the lockout (which I thought foliar feeding would help to solve by giving nutes directly to leaves).

Oh, the pH of my soil is sitting right at 5.8-6.2.



second plant is a different plant with similar symptoms, just looking healthier

also, any idea on the withered/papery look of the leaves? I have read maybe potassium? Any help would be so much appreciated!
 

Smrt

Active Member
You really have to watch diagnosing plants because alot of problems have very similiar signs, very easy to mistaken one defficiency for another one. They do look good tho. Dont panic and stop pumping shit into them in hopes of 'fixing' things. If anything the ppm is too high.
 

Chebus

Active Member
You really have to watch diagnosing plants because alot of problems have very similiar signs, very easy to mistaken one defficiency for another one. They do look good tho. Dont panic and stop pumping shit into them in hopes of 'fixing' things. If anything the ppm is too high.
word,

just got on my comp at home....can see better than on my phone, looks over waterd, how often you water them? also some higher pH wouldnt hurt.
 

zykster

Member
water them based off of weight really, ends up being every 2 or 3 days, I am not putting anything in them either, I am just going to add some pH up into my water and try to get it closer to 6.5 I guess.
 

NoobGrower416

Active Member
I have a baby growing with similar stretched leaves like yours...im very puzzled as to how it'll turn out but this picture makes letting it live look like fun! :D
 
Top