A lot of strains have red in the stems, especially when the plant is younger - I wouldn't worry about it unless there are other problems along with it.
ohhh alright, i steped up my setup today and drained out 3 gallons of water and replaced it with fresh water and added more nutes so hopefully they keep on keep on
I think you should leave your water out for 24-30 hours before you water(assuming you get it from the tap) as tap water has chlorine in it, and your plants dont like it. Leaving the water out overnight will allow alot of the Chlorine to evaporate into the air. For this stage of growth, they are a little delicate and dont want steroids
Never nute new plants. Use distilled water. Tap water has Iron/Arcenic/etc.. basically a bunch of crap in it that the plant does not like. If you have to use tap water boil it and let it cool to room temp before using it. Always use clean fresh water for the first month and few days and give it some extra TLC as that is all plants really require to grow successfully. Get an empty pot or something to catch rain water with when the rains come. Plants love it.