I only mean to be helpful...Why not research here or in a respected publication by, perhaps, Jorge Cervantes or Mel Frank on what a general soil formulation for marijuana might be...You have already mixed up a batch of something or other wishing and hoping that someone here will tell you it might be just fine...You are at the beginning...Why not get it right from the get go??? Now...So you don't have fix it headaches down the road...Are you looking for a mix whereby you just add water for the duration of the grow??? If so checkout SubCools Super Soil Mix...Good Luck...FWIW
By the way...Outdoor in a 5 gal paint bucket, hopefully not a black paint bucket, (solar heat build-up) can be a great technique if you have large drain holes (one inch diameter) at the bottom sides for the roots to grow through; dig a hole about three feet square, six inches deep, amend the soil, drench around the bucket with Miracle Grow Tomato Fert solution (half strength) once per week after setting, water again in between weekly feedings, plant the bucket in the middle about four/five inches deep. About as simple as it gets if you start out right...Again...FWIW
