need help!!

[Barret_wallace]

hey
im doing some experimenting with ligths.
the whitebalance on my camera stands in auto
(Canon 350D)

http://i14.photobucket.com/albums/a326/barret_wallace/femtireblitz.jpg
on this picture i used the flash on the camera,
as you se the ligth is blocked by the lens.

so i tryed to use a standard light tube.
http://i14.photobucket.com/albums/a326/barret_wallace/femtrelys.jpg
the objekt turned out great but tha background got red.
is this due to the standard house holding light tube?
can i use the define whitebalance on my camera to prevent this?
how do i do this?


http://i14.photobucket.com/albums/a326/barret_wallace/femtirelysps.jpg
same picture as above, adjusted red saturation -100
bether.

[Barret_wallace]

and just when i finished typing this i asked my father,
and he told me that i should use the flouring withe
balance preset on my camera :)