I noticed the stem of the peppers on my reaper and white fatalli have been drying out and shrinking. Today when I went out to take pictures it has spread to the top of the main stem of my purple ufo. I used to have a terrible aphid infestation but I got it under control a month ago. Is it a nutrient deficiency, because they are potted in small pots.
http://imgur.com/a/phguv
http://imgur.com/a/phguv