Random Tops in Scrog Yellowing

Smscreations

Well-Known Member
Posted this question in my Grow Journal, but figured i may have better luck here. So here it goes

Have an Amnesia Haze Fast by Seedsman growing using Scrog method.

Finishing up Week 5 in flower and have had an issue start presenting itself this week.

Link to my Mini Fridge project:

Growing in fabric pot
Bottom 1/3 filled with Natures Organic Living Soil mixed with Happy Frog. Rest of pot filled with straight Happy Frog

Obviously growing indoors in a very confined space

Growing under a 50w EnfunXL (amazon special) LED board with plenty of circulation in the box. Heat and Hunidity have been pretty dialed in the entire grow with attention to maintaining proper VPD

Been watering as needed to very very little runoff

Have fed some molasses past couple weeks. Supplemented some epsom salt about 4 days ago in my watering thinking a Mg deficiency was presenting itself

Problem started with a random couple tops starting to turn pale green and eventually yellowing on portions of the leaves. Some of the leaves have eventually started curling up.
Have included some pictures to show the problematic portions of the plant.

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Other than the couple random tops, everything else about the plant seems happy and healthy. If anybody has any thoughts or insight into what's going on, it'd be greatly appreciated!!

Cheers!
 

Smscreations

Well-Known Member
Potassium deficiency. Could be because of pH and poor uptake.
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I appreciate the advice on this issue!! Had went back to just feeding gassed off tap water that was pH'd to appropriate range and it slowed the spread, but eventually got worse again. Ordered some Down to Earth Langbeinite and gave her a couple feedings and it stopped the spread of the deficiency completely. Only casualties were the already affected leaves. Thinking with being in living soil and in such a small pot she just used up everything too quickly. Thank you again!
 

hotrodharley

Well-Known Member
View attachment 5134408View attachment 5134409

I appreciate the advice on this issue!! Had went back to just feeding gassed off tap water that was pH'd to appropriate range and it slowed the spread, but eventually got worse again. Ordered some Down to Earth Langbeinite and gave her a couple feedings and it stopped the spread of the deficiency completely. Only casualties were the already affected leaves. Thinking with being in living soil and in such a small pot she just used up everything too quickly. Thank you again!
Get all the damaged leaves off. Dead or dying invites molds. Looks like some nice fat buds.
 
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