I answered the OP's question directly a few posts back then sought to discuss some assertions made for the benefit of others who might read them. I'll shut up now, but not before completely disagreeing with the whole saltwater vs. freshwater bacteria argument. I cycled marine tanks in Kansas, Ohio, Kentucky, South Dakota and other land locked states long before retailers came up with bacteria in a bottle marketing campaign, and without adding anything that had ever been anywhere near saltwater. Happy reefing & good luck.From my understanding, these species that are able to "cycle" a tank are not felixble enough for live in both marine and fresh environments. I do agree that freshwater systems can obtain this bacteria very easily, but marine nitrifyers should not be found in the environment inland. I can see this being very possible in coastal areas if they do infact have the ability to travel via aerosols or via other air travel, but the course these bacteria would need to take to get to a marine aquarium seems rather troublesome even in these cases. It also wouldn't make sense for any of these bacteria far from the coast to have the ability to tolerate high salinity given that they have not evolved in an environment that would select for that trait. Again, I am basing this off of how reasonable it would seem for these marine bacteria to make it to a tank. If there is some paper that anyone could link here, I'd be very happy to read it.
Ps if anyone wants to move this conversation to its own thread, I'd be happy to continue there
Since the op wants to not drift this too far off topic I figured if mention that