There are lots of choices for food, but Miracle Grow is way down on the list
Im sure you will get several different recommendations, but my current favorite is Mega Crop.
You can get a 1kg bag for $15 plus shipping. That should make around 200 gallons of nute mix.
Check out this thread.
They have been getting (mostly) rave reviews.
Ive used it in a soil grow and two hydro grows so far, and it works great, is easy to work with. You may need to add some additional CalMag depending on your soil and how strong you mix it. Other than that, its a one stop deal.
