First grow outdoors - help in leaves disease diagnostic

[Growbabba]

Hey CostalKind , I've fed it again using BioBizz Grow and BioBizz Alg-a-Mic.
Do i need to feed it everytime I water it? Because now what I am doing is one watering with nutrients and one without completely , as I am afraid from burns..
Should I go to feeding it everytime I water it? Won't that cause salt buildup?

 

[CoastalKind]

Ph lockout, along with coco induced cal-mag def. I don't see ANY nute burning there. I do see phos def.

YOU NEED MAGNESIUM. You can buy a cal-mag supplement. SPRAY A SOLUTION OF EPSOM SALT ON THE LEAVES either early morning or evening, just don't do it in the middle of a sunny day. Epsom salt is simply Magnesium Sulfate. A couple teaspoons per gallon is all you need and just spray the plant until the whole thing is dripping wet. If you have calcium in one of your fertilizers then you may not need calcium. If you don't then you DEFINITELY NEED CALCIUM. I can't tell you whats in the bio bizz line of product because they don't have that information readily available and that is just complete garbage if you ask me. Bio bizz looks like overpriced gimmicky bull shit that takes advantage of the marijuana growers demand as far as I can tell. One watering of tap water and one watering of nutrient water should be fine but you have to read your plants. I always feed according to what the plants are telling me and what i know from experience. Every one has already told you this information. You just haven't fallowed through. If I where you I would count my losses and re-pot that thing in a 30 gallon or larger pot with filled with amended soil. All your problems are coming from using a soil-less medium that is notorious for nutrient lockout and then you are using crappy nutrients on top of that. Good luck man. Your plants need many things to survive and soil-less mediums have none of these things. Those things are nitrogen, potassium, phosphorous, magnesium, calcium, manganese, molybdenum, iron, zinc, copper, chlorine, boron, and sulfur.