you dont wanna put tin foil on the walls , unless u put dull side showin then u want lights ,cheap option wud be cfl lights , i tihnk a red an a blue would do you thru out ya grow ,.also
once ya get them started you would need to put them on 18hours light ,6 hours dark (total dark)
do this till they have grown a little then change lightin to 12 hours dark 12 hours light this wil make them flower,afta 8 weeks or so u will have nice big buds ..well thats how it wrks in me dream theres ya BASIC grow guide lol :rasta: