Pandan is right on there, or just go down to your local nursery and get a bag of their "house mix"potting soil if they have one. It generally has no nutes, which is good because you know exactly whats in the soil. Nothing other than what you put in it.Try and get some worm castings as well. 25-30% EWC to soil.
As far as nutes go, If you can find the Espoma brand, you can't go wrong. 100% organic. Their PlantTone, BioTone and BulbTones are great, they also have blood, bone and kelp meals.