Apparently the Lucas formula is really about 2 ml per liter of Micro and 4 of Bloom (making a rough conversion of a gallon to 4 liters though it's really 3.78541), so it would be double what I said, 100-200-180 ppm, plus 5% to correct for the rough liter conversion. That's actually pretty much identical to what you get with 2.5 ml per liter of FloraNova 1 part, which would be 100-200-175. So congratulations to Lucas for making the 3 part exactly like the 1 part. I guess I'm using the Lucas formula without even trying, because I use the FloraNova Bloom 4-8-7.
Could just call it the FloraNova formula. What Lucas discovered was that the 3 part was really designed so that Grow + Micro is the same as FloraNova Grow, and Bloom + Micro is the same as FloraNova Bloom. Which is how I originally figured they should be used. They probably just cooked up the all three together thing later. However, with the 3 part and using the Lucas/FloraNova formula you have to use 6 mls of nutes in total (2 Micro and 4 Bloom) whereas you only need to use 2.5 ml of FloraNova. Actually the Lucas formula has a section for FloraNova. It says 8 ml per gallon. He was a little short but close. Would be more like 10.
BTW, there's no reason to use only the Bloom with the Micro. Micro + Grow at 2 ml and 4 ml gives you 18-4-26, Mg-2, Ca-10. There's no way to tell how much sulfur is in it because the Grow lists both magnesium carbonate and sulfate, no way to know how much of each. I'm sure it would be sufficient though. So Lucas screwed up by recommending the same formula for both veg and flower. Obviously, the Bloom is too low on nitrogen for veg and phosphorus is too high. See I told you Lucas was a stoner. I call this veg mix the "Cajun formula". You have to credit me every time you mention it. And every time you use it you have to say "thanks, Bob, you is a genius, son".