I took the time out to read this whole thread, good stuff. The girls look real healthy too - I got another weapon of mass destruction you can utilize for your war with The Gnats lol. Have you tried mixing dish soap & vinegar? Apparently Gnats (or fruit flies, I'm not too sure of there difference since people use the terms interchangeably) are attracted to the smell.
Personally, I took an empty Arizona Iced Tea bottle (already fruity scented), mixed the two half & half and added some chopped up pieces of banana peel skin at the bottom just to attract them better - sat back and WATCHED THEM DROWN. You can add saran wrap over the opening of the bottle, wrap it around with a rubber band, then poke holes at the top so they can crawl in. They either can't find their way out or they drown. Maybe set it around the pots as well, so you can catch the ones that aren't directly landing in or around your plants. I had 7-8 gnats flying around my room out of no where.. after i did a quick Google search on how to get those lil fucks to stop bugging me, I found out they can seriously get out of hand, FAST. so...they had to go. Next day, they was all gone.
