pics of a prob im having, hope someone can help

its affecting the one I took the whole pic of the most the leaves are dying from the bottom up, they are dull they have rusty burny spots on them, all my plants are going to die if i dont figure out what to do, I have neemed, still waiting to see if it has any effect, also tried watering with nodamp, and again still waiting. I had a little nute burn in the beginning as i used a soil that had nutes put in at the factory, slow release nitro and all that stuff. but then the burn stopped, they have been growing well but im losing more fan leaves than im growing now i think. Not all my plants are affected.

i had that on one of my plants.. i dont know what it is but it didnt kill my plants.. sorry i cant help...!! peace!!

need more info

i had that on my plants and I added some dolomite lime as a top dressing and it helped... don't use too much. At Home Depot it is called garden lime. If it is what was happening to mine, it could be a nute lockout caused by too high or low of PH in the soil. If you do not have a PH tester they are like 15 bucks at lowes or HD in a nute lockout your plant cannot soak up the food it needs. It probably has a bit of magnesium def. Try the lime and get a ph meter. That's what I did and mine came back to zest. With the info and pics I see that is what I come up with. Just a suggestion.
Elway