When Can I Flower?

Okay i Germinated my seed and it sprouted and was planted the 16th of February.

right now it is in a 5 gallon bucket...

it is at about 8 inches tall...

the stem is nice and big

these were the last pics taken about 2 weeks back..
http://i636.photobucket.com/albums/uu89/Julyyy45/MJ002-1.jpg
http://i636.photobucket.com/albums/uu89/Julyyy45/MJ001.jpg

the pics show its on the 2nd layer of leaves goin to 3rd..right now its on the 4th goin to 5th..

also..this is a stranger seed...idk what kind it is...so yeah it was just pulled off a bud that was sold to me...

andd another thing is at when should it go to 12/12

(my first grow)

The answer to when you should flower depends on how much room you have in your grow box. Some strains can double in size or more once you flip them over to 12/12.

Well, if that's all the light you've got I would flower soon. But if you have the lights for it grow it as big as you want. Just plan on it about doubling in size during flower like Green said.