60w is too low.. Could probably do a solo cup grow.. But Cannabis needs light and that's just not enough light.. To Veg sure.. But flowering with that light would most likely be a disappointment.
Hi @nejcrozi. this is very relative, 10-15gr, it depends on how you treat it. a 2L pot is too little. I usually do it at least 5.5L and when I really want small ones I do it at 4L. and if you want it lower you can always do topping. good luck 👍