Is this a Deficiency ?

hello guys can anyone tell me what is this def on my plant ? its growing under a 600 watt hps in a 3.3x3.3

what're you feeding it? looks like phosphorus deficiency.

i top dressed it with guanokalong guano about 1 week ago . Im using biobizz light mix .My tap water is 90-100 ppm.I give 1 ml/l cal mag every ,two waterings...i thought maybe calcium ?

You don't need cal-mag in flowering afaik. You do need more PK than normal.

Ph? is this on top leaves only?

My ph is okay.i always water with 6.3-6.7 .No its not only on top leaves.

this is from bottom

i watered it with 1.5ml /L call-mag (i dont think it will hurt it )
1.5ml/L Alg-amic. 3 litres of water in total

and then when i saw then comments that probably is Phosphorus i gave it another 1,5 L phed water from the same water i gave it before but including 1,75 ml Bloom(biobizz) fertilizer

i hope i dint messed it up.

GrowerCy said:

i watered it with 1.5ml /L call-mag (i dont think it will hurt it )
1.5ml/L Alg-amic. 3 litres of water in total

and then when i saw then comments that probably is Phosphorus i gave it another 1,5 L phed water from the same water i gave it before but including 1,75 ml Bloom(biobizz) fertilizer

i hope i dint messed it up.

Click to expand...

If that doesn't fix it, I don't know what will. If it starts looking any worse, raise your lights and flush.

Maybe I missed it but I can't find your medium?

Beachwalker said:

Maybe I missed it but I can't find your medium?

Click to expand...

biobizz light mix

Dark green leaves, burnt tips...

You mentioned you used this Guanokalong Guano a week ago...it's a 1 10 1. Why do you feel you're short on P when you just gave it almost straight P?

And whatever you....don't "flush".

Can you provide a full plant picture? Also, elaborate on your feed / water program; the details. How far along in flower are you?

Bro this is phosphorus deficiency.. Also they look like they get too much nitrogen.. What about your blooming nutrients?