Newbie needs help

Hello and thanks for helping out. I am growing 2 clones. Both are about 2weeks old. One is a og sourdiesal kush and the other is og kush.Both are growing in 4.5 gallon buckets with fox farm soil recommended by my local hydrow shop. Ive added mexican bat guano to the top of the soil and am watering them with about 250ml of water everyday. They are under 400 watt MH light with reflectix surrounding. One fan blowing into a vent out and another clip fan circulating air. It is in a small closet but tall and the temp. stays around 84f and 20% hummidity. Both plants seem to have purple stems developing. The sdXog plant has very dark leaves almost kind of blueish/purpleish tint at the ends. The og plant has green in the middle of leaf but light green on the edge. Anybody have any advice?

it might be too early to use fert or nutes of any kind..... when you say they are 2 weeks old,,do you mean that u cut them 2 wks ago? and put them sraight into soil??? if so it would be best to use seeding soil with no nute for the first 4 weeks or so then start to feed them small amounts as you notice them growing new leaves... maybe you need 2 put htem into new soil....there are products you can get to minimimize stress when transplanting but I would'nt know what they are called around your way.. but any garden and or hardwhere shop should stock some.....
good luck :^)

do you have pics?