my first grow

hi Everybody i am new to this site and i want to share my grow with every1 but i am already 3 weeks into flowering with my grow so i will have to start from there.My soil and ferts i am using canna coco plus soil and my ferts are coco a coco b hammer head pk9/18 and dr hornsby big bud. My lighting i am using 4 42 watt cfl bulbs. My ventilation i am using an old bathroom extractor fan. My temperature it is between 22 to 25 c at day time on night time drops to 18 to 20 c but to keep it at this at night time i use a ceramic bulb and set the temperature with a thermostat because it would get to cold at night when the lights are off because it is in my garage. My space it is 45 inches high and 35 inches long but i am not using all of this space because i have only got 1 plant in there. If i am doing things wrong or something different i would be happy for you to put me right

The grow room
http://img88.imageshack.us/my.php?image=dsc00078tk7.jpg
The soil and fertilizers
http://img242.imageshack.us/my.php?image=dsc00086it5.jpghttp://img228.imageshack.us/my.php?image=dsc00085fr9.jpg
The lighting
http://img228.imageshack.us/my.php?image=dsc00080ez1.jpg
The ceramic bulb
http://img218.imageshack.us/my.php?image=dsc00081nc6.jpg
And now the plant
http://img228.imageshack.us/my.php?image=dsc00079up9.jpg
http://img175.imageshack.us/my.php?image=dsc00083xm8.jpg
http://img228.imageshack.us/my.php?image=dsc00082dp2.jpg
http://img407.imageshack.us/my.php?image=dsc00084bk8.jpg
http://img175.imageshack.us/my.php?image=dsc00087ex4.jpg