Plants not looking good


One of my plants does not look like the other, it has brown spots and it doesn’t seem to grow correctly

Here ya go.
Strain; Type, Bag Seed, Or Na

Soil In Pots, Hydroponic, Or Coco?

System Type?

Ph Of Runoff Or Solution In Reservoir?

What Is Strength Of Nutrient Mix? Ec, Or Tds

Indoor Or Outdoor

Light System, Size?

Temps; Day, Night

Humidity; Day, Night

Ventilation System; Yes, No, Size

Ac, Humidifier, De-humidifier,

Co2; Yes, No

Add Anything Else You Feel Would Help Us Give You A Most Informed Answer. Feel Free To Elaborate. Clear picturs in natural or white light helps.
Happy growing.

Wow looks like you have a few problems one is calcium and maybe magnesium have you been giving ur plant any cal/mag at all and it also looks like a ph problem what is ur ph of ur water