cannabis struggle for life

so this is my first time growing and ibought a aero garden, the hydroponic really works but the bulb it came with sucked i replaced it with 2 27w5500ks.
in the beginning i grew one plant and it had its 4 first leaves perfectly but then i took off the caps for better light and 1 day later all four leaves got choped on by small roaches im thinking.i put back the dome but it lookslike my plant was not doing well she was a goner i said. 1weekpassed and i didnt even care for it but ileft the lights on. then when i checked 2 smalll leaves were growing andi found my passion again now my plant grew its set of 3 :):pimp:
http://i56.tinypic.com/n4zdqt.jpg
http://i51.tinypic.com/sxndlh.jpg