I've been using Gardner and Bloome but its always packed with gnats so I have to water with mosquito dunk right from the get go. Trying to switch to another "organic" soil. Only so many options near me. Curious what you think of Roots. I would add a decent amount of perlite.
http://www.aurorainnovations.org/original-potting-soil.html
INGREDIENTS
Peat Moss, Coco Fiber, Composted Virgin Forest Material, Perlite, Pumice, Worm Castings, Crab Meal, Feather Meal, Alfalfa Meal, Fish Bone Meal, Bat Guanos, Kelp Meal, Oyster Shell Flour, Greensand, Non GMO Soybean Meal, Rock Phosphate, Humic Ore, Rock Dust, Calcareous Lime, Dolomitic Lime, Gypsum and Mycorrhizaee