Plant Going Yellow

[420grower420]

Hello

I am currently growing 5 plants
4 of the 5 plants are looking healthy all the conditions are the same for all plants in the grow room, temperature humidity ph is monitored
1 plant is turning yellow, It's a gorilla bomb and some of the lower leaves are dying. I'm wondering what could have caused this since the other 4 plants seem to be healthy

 

[420grower420]

This is the gorilla bomb seed that's having problems

https://ibb.co/n4GPDk

 

[420grower420]

This is healthier plant gorilla glue fast bud

 

[420grower420]

Anyone got any ideas
I think it might be nitrogen potassium defiency

 

[Dunge]

use the "upload file" button to post images.

 

[420grower420]

Gorilla bomb day 18 from seed

 

[420grower420]

Day 18 of gorilla glue grown in the same environment

 

[dannyk892009]

I think you're right on with your assumption. I'm leaning more towards the potassium deficiency.

 

[420grower420]

I think you're right on with your assumption. I'm leaning more towards the potassium deficiency.

I just watered it with very small amounts of floragro and floramicro so hopefully it will recover from This, looks like it's already a few days behind compared to the others