So fungus gnats are a lot of fun...

I'm starting my second grow, three DWC 5 gallon buckets under 600w. I had a few L.S.D. grown in soil (1 gallon pots) on my first grow and I really like one of the phenos (REALLY like it! Sativa dominant, it's like "Excuse me sir, do you take any green matter with you trichomes?") and decided to reveg it in the same room I'm starting my new grow in until I can get another room for vegging only.

I had a slight issue with gnats at the end of the last grow (MG potting soil...), nothing too bad, a few fly ribbons took care of the worst of it. My new seedlings are just starting to sprout and I'm seeing massive numbers of the little buggers. I didn't think it would be an issue seeing as the soil pot will be out of the room soon, but the gnats seem to have infested the hydroton in my DWC. I didn't know they could propagate in hydro grows....

I see lots of answers for gnats in soil, but what does one do when they invade your DWC buckets? Can they survive in the hydroton alone? Will removing the infected pot take care of the problem?

The seedlings are only about 3 inches tall at this point (which scares the hell out of me, thats a very small amount of root matter for a lot of hungry baby gnats), the roots haven't yet pierced their basket bottoms and I may be able to very gently remove the rockwool cubes and spray down the hydroton with highly diluted dish soap, think this'll take care of em?

Gnats = Gnatrol or mosquito dunks

If it's actually winged root aphids you need something a little more intense.

I only grow MG soil and have never had Gnats, When I DWC I almost always get gnats, they like the water. I tired Mosquito Dunks and they did not work, I then used Gnatrol and it works like a champ. Some 35% H2O2 works well too.. Little basterds. A yellow sicky cards placed on the top of the hydrocon gets a lot of them

Its the ganat larvae you have to kill to break their life cycle,as they can really harm young plants by eating their roots.
I found this link helpfulhttp://forum.grasscity.com/sick-plants-problems/544536-how-kill-fungus-gnats-hydrogen-peroxide.html.
Does the job quick and your plants will love it.
Good luck.

Awesome! I'll give he peroxide a shot, that's a lot simpler than dish soap. Thanks guys!

are you sure they are gnats and not root aphids?

Yeah be sure they are not root aphids like others have mentioned.

Gnatrol is the shit if they are just gnats.

Gnat nix or perlite as a top dressing works well to if in soil, but I don't think you were tho? Didn't read through the post well.