Brown spots on new growth whats going on?

[TitoM]

I have 2 southern orange that r doing this I'm not sure if I just got a bad bag of FF. r if its my new light.(led qp) I switch a week into flower. I have only feed them once at less than 50% strength. I do add cal mag every watering can that be it? The plants r still doing there thing but I know there is something wrong .thanx

 

[NoWaistedSpace]

My guess is your plant has used up all its "Phosphorus" reserves. Now it's beginning to lock out the "immobile" nutes. After flip your plant uses P like crazy, quickly using it's stored supply in its grow medium.

Ah Ha!
You "zip tied" it too tight! lol

 

[Bodyne]

Phos deficiency

 

[TitoM]

.thanx I'll look into how to fix it

 

[TitoM]

My guess is your plant has used up all its "Phosphorus" reserves. Now it's beginning to lock out the "immobile" nutes. After flip your plant uses P like crazy, quickly using it's stored supply in its grow medium.

Ah Ha!
You "zip tied" it too tight! lol

So I looked up the phosphorus deficiency and and from what I gathered is everything starts from the bottom of the plant moving up. Mine r starting on the tops .

 

[Bodyne]

If you check that chart, yours is at the progressive stage, like had it awhile, hence seeing it on leaves and not lower. I'm a dumbass, but I'd feed em more and add lil cal mag and see what happens. I think you are feeding a lil light, jmho

 

[NoWaistedSpace]

So I looked up the phosphorus deficiency and and from what I gathered is everything starts from the bottom of the plant moving up. Mine r starting on the tops .

P def begins "masking" immobile deficiencies. immobile/micro nutes needs a chelate.( to hitch a ride from the Macro nutes.) Chelated means "clawed".
Feed them as Bodyne said.
They will get better in no time.
I feed almost every watering.

 

[TitoM]

Ok I'll give it a try on my next watering

 

[TigerTanks]

I would also pot up, even though you’re in flower, potting up with FFOF will give them a boost