Def VS Excess situation

M

Mar1799

New Member
Hi, this not my first grow, but been wondering whole day, is this some P or K excess or deficiency?
They are autos, 5 weeks old.

Grown in soil.
Use Plagron light mix, and Plagron fertilizer. Started @ 2 week 25%. Now 65% of indicated strenght.
 

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what kind of soil are we talking about? with soil, it should last you anyware between 4 and 6 weeks b4 you need to start feeding
 
im not familiar with that type of soil, so i wont be much help to you, dont worry, someone will be along shortly. good luck with it and wellcome to rollitup
 
Hi guys, maybe someone else has any idea?
I `m a bit perplexed :confused: - should I flush or ad extra nutes. Tricky :)

Hope pics are ok, I can take some more if that helps.
 
At first glance looks like Mg deficiency,yellowing between green veins.
Epsom salt is a cheap source of magnesium.
 
myke said:
At first glance looks like Mg deficiency,yellowing between green veins.
Epsom salt is a cheap source of magnesium.
Click to expand...

Forgot to mention. I am adding half teaspon of mollases per liter every watering. But maybe that is not enough.
 
Mar1799 said:
Forgot to mention. I am adding half teaspon of mollases per liter every watering. But maybe that is not enough.
Click to expand...
Thats likely your problem. Stop the molasses. It causes a lot issues in the rootzone. Its only benefit is as a food source when brewing AACTs and even then in very low amounts.

Mag washes out easily and locks up with a low pH. Epsom salt at 1tsp/gal. Foliar for a quicker response but you can add it to your nutrient solution as well.
 
Tangerine_ said:
Thats likely your problem. Stop the molasses. It causes a lot issues in the rootzone. Its only benefit is as a food source when brewing AACTs and even then in very low amounts.

Mag washes out easily and locks up with a low pH. Epsom salt at 1tsp/gal. Foliar for a quicker response but you can add it to your nutrient solution as well.
Click to expand...

Ouch, and I wanted to ad extra Mg by adding molasses.:wall:

tsp= teaspoon, not tablespoon, right? :wink:
 
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