After extensive googling over the weekend I came across 2 commercially available products using the same design principle, filter, light and fan.

http://www.stingerproducts.com/sting/shop-bug-zappers/nosquito-stinger-indoor-insect-trap-ma06/#lightbox/0/

http://www.drugstore.com/products/prod.asp?pid=194168&catid=198304\

I even found a patent for the Gnat Vac (that's the same name I was gonna use) with building instructions. He uses a green light  because his is designed for a Marijuana grow room. You need 12 hours of solid darkness.

http://www.google.com/patents/US20120159836

My design cost about $40 and looks like this. It's made up of a wind tunnel and capture chamber.

http://i39.photobucket.com/albums/e160/KKfromNJ/GV3.jpg~original

The wind tunnel and capture chamber attach with 2 rare earth magnets (next time I'll use 4, 2 separate too easily). Because of the aluminum fan housing I attached two nails to opposite sides of the fan.

http://i39.photobucket.com/albums/e160/KKfromNJ/GV2.jpg~original

http://i39.photobucket.com/albums/e160/KKfromNJ/GV1.jpg~original

Wind tunnel top removed.

http://i39.photobucket.com/albums/e160/KKfromNJ/GV5.jpg~original

http://i39.photobucket.com/albums/e160/KKfromNJ/GV4.jpg~original

The filter is 2 layers of furnace filter.

http://i39.photobucket.com/albums/e160/KKfromNJ/GV7.jpg~original

http://i39.photobucket.com/albums/e160/KKfromNJ/GV6.jpg~original

I bought the fan on eBay its 56 CFM, don't think I'd go lower than that.  One thing is for sure, this really works, very well, catches them day and night.

After about 2 1/2 weeks this has been a smashing success at a cost of approx $1 in electricity.  I don't "see" anymore, I'm down to catching one or two a day.

Besides the Fungus Gnat pests something was digging in my gallon sized Basil

HaHaHa

I started rooting with cocoa coir and gnats were gone. Last year they got there fair share of cuttings

Thanks for sharing! I need to try this... I received a houseplant as a gift which had Gnats and now they have spread :(. I have done everything but buy the nematodes.

Remember, fungus gnat larvae eat roots...not the flying adults. Coco coir watered with gnatrol or similar is the best option.

Cleaning Day, continues to round those buggers up, best investment I ever "made"

http://i.imgur.com/ET7jOTl.jpg

http://i.imgur.com/jLGNrms.jpg

Could you tell us where these parts come from? Thanks

Oooh, thats what you call success!!

coco coir never start a cutting without it 

The peroxide you buy in the store is only 3% so you won't hurt anything by adding it undiluted.