Unfortunately we cannot beat the mother nature. Cycle means establishement of bacterial life forms. However sometimes this process may take a few days, but in very different conditions. I cycled my second set up with "Nature's ocean" bio active aragonite sand. This sand is so active and full of critters and bacteria, that i actually never saw ammonia spike and nitrite was high only for a few days. I cycled that tank with 4 raw shrimps.