hello i am new to this site and am about to begin what i hope to be a good invesment. i have just bought the best of rev grow special and figure it sounds like a woderful way of growing. anyways my question is i have started a soil mix for my beans and am curious to know if i have a safe mix. so far i have peat moss black earth mushroom compost green sand worm compost and lime. unfortunatly i have no soil ph probe or liquid tester i also wanted to know if this mix would contain micro organisims to balance the ph? i also have other nutrients should i add anything else?