OK man, none of those plants look all that healthy so you might want to stop putting cig butts out in the soil.
And I would not spray anything on the plants, a lot of people like to foliar feed their plants but I never do. I always apply the food through the soil and it has always worked for me.
A couple of question...
What kind of soil are you using?
What kind of nutrients are you using? (Organic or Synthetic)
What kind of light are they getting? (Looks like some kind of greenhouse to me but I don't know about anything else)