Brown spot on bell pepper
I have some yellow bell peppers growing in a container. I forget the name; I got them as seedlings from the feedstore. They're planted in MG potting mix, with 5 holes drilled in the bottom of the white plastic container. The peppers are about 1/3 the size of a mature pepper now and one has developed a soft brown spot on the bottom. What might be causing this? Too much/ too little water? The heat? Critters? The plant itself looks fine.