Is this root rot?

[sylvestris]

Hi!

I've recently moved my chilies from my cloner DWC to my home made full size DWC. I'm using Canna Aqua Vega nutes and aprox pH 6.0 and 200 w cfl blue.

The problem: The roots on the plants have turned slightly brown/red with a little slippery surface on them. Have they been struck by root rot? :S

So far I've started adding h2o2 (liquid oxygen) according to instructions and just recently i've started using frozen water bottles to chill my nute solution.

Is there any way of telling if it's root rot, algae or "normal" perhaps discoloration from nutes. My plants doesn't really seem affected by it. My chilies have actually started budding at only 15 cm height. Also they've got some "dry patches" on the top leaves.

One thing i noted though, was that when moving the plants they stopped developing the roots they came with from the cloner and started sprouting new roots, a bit sturdier roots. Almost like a hedgehog (make sense?)

Here's some pics:
http://dl.dropbox.com/u/16543382/DSC00037.jpg
http://dl.dropbox.com/u/16543382/DSC00038.jpg
http://dl.dropbox.com/u/16543382/DSC00032.jpg
http://dl.dropbox.com/u/16543382/DSC00033.jpg