Thanks Kurt, that was kinda what I was thinking, but wasn't sure. Now, at the risk of sounding like a complete idiot, what if I use well water or water out of my creek. I live 13 miles out in the country and have nice sandy creek in my front yard. Would that water already be "cycled"? I would like to expedite the process if possible. I am afraid if I wait four weeks it will be too cold to ship the little guys.