Phosphorus deficiency

[Artstone]

I’m pretty sure this is phosphorus deficiency but would like to confirm , it’s only showing on bottom leaves

 

[Gingerbeard]

Sounds like a reasonable diagnosis. Here's a bit more information on causes and cures and whatnot.
How to fix Cannabis Phosphorus Deficiency (P) Pics & Symptoms​

 

[Artstone]

Sounds like a reasonable diagnosis. Here's a bit more information on causes and cures and whatnot.
How to fix Cannabis Phosphorus Deficiency (P) Pics & Symptoms​

Thank you!

 

[Bluey]

Is that one of those biodegradable seedling starter cup things that don't degrade or break down like they say they will on the packet?

 

[Artstone]

Is that one of those biodegradable seedling starter cup things that don't degrade or break down like they say they will on the packet?

those mf! Yes I will never get again

 

[shadycon]

Carefully pull them up and remove pot,replant.

 

[Artstone]

Carefully pull them up and remove pot,replant.

They have already grown through the pot so .... Just wont use again!

 

[Artstone]

So I feed with about 3/4 nute and less of high nitrogen nute and plants look better , with this exception, not sure if this is phosphorus deficiency or what

 

[Bluey]

I think the problem is caused by that cup..It looks like she is coming good though