Will use 1 gallon H20 jugs sliced in half
Roots dont like light. U'd have to cover the sides (ie. black tape)
-plastic pots are ridiculously cheap at walmart.
-Even cheaper, when i transplant before goin into flower, I get those re-usable wal-mart bags. they're .25cents each and hold 3Gallons of dirt.

Fyi, You know they are only 1.3 weeks post germination right
What are you gettin at?