any medium can be used, i knew a dude that grew some good stuff in playground sand and mg ferts or maybe schultz, i wouldnt have believed it if i didnt see it. (i wouldnt use sand)

well alot of things come into play and youll have to learn to adjust

i generally use the second from the top line at my local nursery for potted plants if theyre gonna be in pots sometimes i add perlite sometimes i dont and it usually costs between 6-10 dollars.

recently since the supermarkets started carrying the entire FF line i found a store that dropped their price per bag to $12 for 1.5 and ive had to adjust my purple erkle goes magnesium def. after about a month and my headband went p-k defficient at around the same time. so what im saying i guess is close your eyes and point to pick one. if you like fox farms read the ingredients and go to the nursery and find the same thing with a different name.

as far as sunshine i wouldnt recomend it if theyre gonna be growing longer than 3-4 months cause after the lime runs out it might get difficult to maintain proper ph

i currently am using FFOF i a gallon for a month til nutes are bout gone then to pmix4 where i can control flower nutes so i only buy flower nutes.