Use 1 tablespoon of dolomite lime per gallon of mix. This is essential for the plant, it provides the tomatoes with calcium and magnesium. I have Super 100, and Husky Cherry Red, and Jelly Bean Hybrid cherry tomatoes going outside . I use 1/3 peat moss, 1/3 perlite (both non-miracle grow), and mushroom compost with the lime. I use water soluble MG fertilizer for my tomatoes only and they are doing well. I live down south and I put them outside and the end of feb, they are now 5 ft tall and going strong!