Yellowing starting to occur: week 4 flower

[Ganjamon876]

Im not sure what could be the cause of the yellowing, I follow a basic feeding schedule , all my nutrients I use are advanced nutrients; 2ml/L sensizyme & carboload, 2-3ml/L bloom A&B , am I doing something wrong ? I don't like the fact that all the leaves are starting to look like that . Any suggestions would be great. Thanks

 

[Nixs]

Looks like potassium deficiency or lockout

 

[Ganjamon876]

Looks like potassium deficiency or lockout

What makes you think lockout? from my understanding the plant is up taking the watering well

 

[Nixs]

What makes you think lockout? from my understanding the plant is up taking the watering well

It could be either a deficiency or a lockout, I'm not that expert

 

[PadawanWarrior]

Looks like potassium deficiency or lockout

I agree, lockout.

 

[Nixs]

You can take a look here and see

How to fix Cannabis Potassium Deficiency (K) Pics & Symptoms

Leaves with a potassium deficiency have yellow, brown, or burnt edges and tips. It may look like nutrient burn, but the leaf margins also turn yellow.

www.growweedeasy.com

 

[Nixs]

I agree, lockout.

What causes K lockout? Low PH , too much Ca, what else?

 

[PadawanWarrior]

What causes K lockout? Low PH , too much Ca, what else?

All those. My guess is pH though in this case.

 

[Bukvičák]

I would say overfed rather than deficiency or lockout. They might be under too strong PPFD expressing it like deficiency also. I would dim or raise your light, skip bullshit and go just base nutrients.

 

[Ganjamon876]

You can take a look here and see

How to fix Cannabis Potassium Deficiency (K) Pics & Symptoms

Leaves with a potassium deficiency have yellow, brown, or burnt edges and tips. It may look like nutrient burn, but the leaf margins also turn yellow.

www.growweedeasy.com

Okay thanks !

 

[Bignutes]

Overfed on nitrogen tips only brown, curling back, darker green than should be, lay off nitrogen and bump K up, check ph