Can i get a diagnosis please??

[Newbie9797]

i am a new grower i have a tropicana banana in a 15 litre pot under a 600w hps i have been feeding a and b , rhizotonic in low doses giving a litre of water a time it is in the 3rd week ov veg and the large fan leaves are going yellow and brown at the bottom and the newer leaves at the top are lookin crumpled up and dry i have an oscillating fan and an outtake fan does anybody know what could be the problem

[Easy-T]

Welcome along, lights off pics are better fill this in, give people more of an idea

Soil or hydro or coco:

Strain:

Photo or Auto:

plant age:

pot size:

has it been repotted? and when?:

soil type:

nutes or additives used and how often for soil:

Air temps (max min):

Res temps (max min):

humidity:

lighting type and wattage (hps, led, cfl):

Light schedule:

ph level:

EC (hydro and coco only)

Background EC.

feed schedule and nutes (for hydro and coco)

anything else you think may be relevant!

From behind the bushes

[Boru]

were does your water run off, i cant see any tray under your pot, is your feed just sitting at the bottom of the pot???

[Boru]

No links please

[Boru]

watch this, theyre saying you need cal/mag


NO LINKS

[Boru]

If you’re using good nutrients, cannabis plant may still show signs of a magnesium deficiency if the pH at the roots is too low. That is because when the pH of your root zone is not in the correct range, your cannabis cannot properly absorb magnesium through the roots.