How do I employ the Lucas formula in soil

I was able to get my hands on a bottle of flora micro and flora grow from a buddy of mine who's hanging it up for a bit. The ladies (and gentleman, as they have yet to show) began flowering 3 days ago. Please don't chide me for not using the search feature; I did and needless to say the matter is still unclear. I am certain the amounts and proportions of Bloom and Micro should change as flowering progresses. Every formulation I have seen thus far does not. So, to a you pros out there who have been using this method and consistently churning out massive crops, what is the formula? Likewise, if you're willing to divulge your secrets; what is your unique formulation that improves upon the lucas formula? Remeber, "SOIL NOT HYDRO!"