best option is getting some 'bacteria in a bottle' to get it going. make sure to feed the bacteria (fish food) as well. should be ready to go in a matter of a couple days. those products really do work great. just be ready to test frequently for ammonia once the fish are in there and dose prime and do water changes. likely you won't have an ammonia problem though.
Thanks. I got this stuff by seachem called stability. Read some good reviews about it.