Formula 707 was created for a special kind of gardener one who wants to control their own destiny. Formula 707 is different from the other potting mixes created by Aurora Innovations. It was designed with greater water holding capacity less perlite and pumice and a light charge of nutrients for a good back bone but plenty of room for you to amend. It’s base is peat moss coco fiber compost perlite and pumice. The bag itself is a 30 gallon grow bag containing just less than 20 gallons of the finest quality potting mix. Just poke holes in the bottom cut off the top and plant. Roots Organics Formula 707 is a ready to use soil created for fast growing heavy feeding plants. Most plants may benefit from additional fertilization. For exceptional results feed with a high quality nutrient such as the Roots Organics fertilizer line.