now that you have more info, i think you'll get more replies....i'm not too knowledgeable about soil growing.....or about lights, especially floros. i use HPS lights with extra blue spectrum.

i can tell you that you are having a nutrient problem. you should not just rely on nutrient filled soil. the red streak i THINK is a nitrogen deficiency. you definately have to do something about the nutrients. and i'm not knowledgeable about soil nutrients. sorry.

also make sure NOT to overwater. if anything, let the soil dry until the it is mostly dry except the bottom of the pot. that will help the roots grow out seeking for water and be stronger. hopefully someone will follow me to fill in the blanks. take care