Late last night as I was turning off the grow light, I noticed two sweet pepper plants w/leaf damage. These are the only sweet peppers and were right in the middle of many hot peppers and tomato plants(hence not noticing sooner). Idiot that I am, I panicked and sprayed them off with water(thinking mites)BEFORE taking pics. So, these are pics taken today. I also looked under a magnifying glass and can see nothing moving or anything that looks like bugs. None of the other plants are affected even though they were touching. These are "Sweet Pickle" ornamentals. I grew them last year and had no problems...they were hearty and prolific. All were potted up in the same mix into 16oz cups about a week ago. I haven't started hardening them off yet as our night temps are still in the 30's. Nutritional deficiency maybe? I've been using weak MG solution(1/4 tsp to a gal of filtered water)once a week between regular waterings(hot dry apartment). Too much MG? I have a small fan on for a few hours each day. I start my plants(from seed)this way every year and usually have no problems until they are outside. Any help is appreciated.