Well the pros and cons of dry starting are pretty simple.
Since you are growing outside of water, there will be more ambient co2=faster growth. No tank full of water=no algae.
Adjusting time! Since the plants will be going from being emersed to submerged, the plants may wilt a little and then bounce back with good co2 and lighting.
NOTE: When you first fill your tank after dry starting, RAMP UP THE CO2. Since the plants will be more used to being exposed to high Co2 while being "dry", you gotta put a ton in to the water when it is filled because there is less co2 in the water compared to ambient air.
Last edited by aquanauts; 07-13-2015 at 03:11 AM.