"X" acres of water will support about 25-30% more lbs of SMB per acre than LMB.
Snipe (and everyone),
That is not one that I had heard before. (But that is true of LOTS of things!)
I like "rules of thumb" for complicated issues, as they typically provide good starting points for more thorough investigations.
What is the reason for the ability to support more biomass of SMB?
Does that rule generally apply from north to south, or does the SMB advantage become smaller for warmer ponds at more southerly latitudes?