HYDRO root problem (pics)

Well, I took a look today, and my roots seem to be slightly more darkened. I'm starting to think it's root rot after what topfuel29 has come up with.
I just placed this plant in this solution about 4 days ago, that's when all this started. I also turned my water pump from 4 times a day to 6 times a day. Could this be overdoing it? The solution is high, I have a pump giving it nutes, and part of the root system is in the solution itself. Could this be a point of interest?

Also I want to thank topfuel29, along with everyone else. Kudos, and +rep everyone.

Okay, I'm starting to think my problem may be insufficient amounts of oxygen. So I'm looking for a new air pump. I'm just wondering, can I over do it? I only need a 5 gal. I'm looking at a nifty 55 gal. one. I'm even contemplating a 80 gal. air pump. Should I stay away from all this air pressure in such a small area?

throw another airstone in there to be safe.

Maybe try some H2O2 if it get's worser

the more o2 you get your roots the better, thats why aero works good, but the more you can put in DWC water the better

How much hydrogen peroxide should be added to a resavoir to get rid of unwanted bacteria??

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