Thanks for all the info gentlemen. I will get to work on these methods ASAP.

BTW- how much damage can these gnats do to my girls? This is my first grow indoors so I don't have much to compare my current plants to. They appear super healthy and have great color/growth rate. The ph of my water that drains from the bottow is about a 5.5 to 6 and humidity levels peak at 55% but generally stay at 45%. That in itself is a miracle for living in coastal Alabama. Humidity outside in June is generally 70-90%. The only thing that happens is one of my plants has few fan leaves that are curling under just a bit. I doubt this is due to gnats. From all the research i have done it seems to be a nute issue and has improved as I started to adjust the ph of the water that drains from my soil.