actually I think floranova bloom is technically as close to lucas in 1 part as can be. if not exact. i actually like the maxibloom better. mixing FNB sucks and it precipitates in the bottle.
I would add cal/mag with r/o waterwith ro water in coco cut with perlite, would you add cal mg or epsom?
this....thing....has been fed nothing but maxi, cal mag, and recently a bloom booster (beasty bloomz this run, moving onto koolbloom with the next)
7 weeks today (may be hard to tell, that's RDWC under the bowl of green)