To get rid of fungas gnats, try this, it works, I had the problem in the past, and it worked. Just take a tupperware container and put a drop of dish soap in it. Then fill it with water just a little bit so it makes a surface. Then simply put this in your grow room and the next day you will notice a shit load of fungus gnats and their larvae dead and gone. lol btw, your plant looks like it's coming along nicely.