Found a few Im still deciding on for this years outdoor grow. Maybe someone could help me out maybe which ones cheaper or if one if substantially better then the other! *****Not in the US Don't have FoxFarm & other American Soils****** promix (3.8 cu ft) *****Better to use Pro-Mix HP or BX??????****** 8 cups Bone Meal - phosphorus source 4 cups Blood Meal - nitrogen source 1 1/3 cups Epsom salts - magnesium source 3-4 cups dolmite lime -calcium source & pH buffering 1 tsp fritted trace elements ******Not sure about these***** 4 cups kelp meal. 9kg (25 lbs) bag pure worm castings - Mix thoroughly, moisten, and let sit 1-2 weeks before use. --------------------------------------------------------------------------•\t1 Bale ProMix BX w/ Mycorrhizae •\t20-50 lbs. Worm castings •\t16 Quarts Perlite •\t4 Cups Dolimitic Lime •\t4 Cups Greensand •\t4 Cups Kelp Meal •\t4 Cups Bat Guano (High N for Veg, High P for Flower) •\t2 Cups Gypsum •\t2 Cups Rare Earth •\tBeneficial Microorganism(water in with a gallon of water each time soil is turned) Innoculaid and beneficial bacteria mix ******Do you have to have the Beneficial Micro-organisms???????****** Mix all ingredients in a large tarp until all ingredients are evenly distributed throughout the soil. Pour or Spray a gallon of beneficial microorganisms on the soil mix and turn several times. After a week, turn and pour another gallon of water on the mix. Mix 2-3 weeks prior to soil use. --------------------------------------------------------------------------- 1 bag pro-mix for containers - 1 bag miracle grow organic choice - Garden Soil (it's ok that it says "not for containers") - 1 cup blood meal - 1 cup bone meal - 1/2 cup dolomite lime - +20% chunky or coarse perlite * This mix is enough to fill 10, 3 gallon bags. --------------------------------------------------------------------------