Heck, do we need a speaker at SFBAAPS???
I think we mostly know all we need to produce the weed.
That's the good thing about getting involved.
You learn 10X faster in person.
If you have a question, ask folks, we pretty much have consensus about most things that matter to any new person.
There has been a great deal of advances due in large part to this single club.
I';ve taken the message further, but SFBAAPS gets the lion's share of the credit for PO4, not needing RO tap water, building soft water, list of parameters, numerous CO2 issues, many new plant species, some on Red plants coloration issues, K+ testing not too long ago, not me............them and other folks.
I freely give folks credit in the group.
I suppose I can give a mini talk if folks are desperate or something.
It'll need to be a specific issue folks will want to discuss, not a general plant presentation.
Something like N cycling, DIC (CO2/HCO3) issues or PO4 cycling etc, or scaping etc.