Faster Aquarium Cycle? Do This First Cycling your aquarium means growing good bacteria to handle fish waste called ammonia. These bacteria change ammonia to nitrite, then nitrite to nitrate. Normally, this takes about 30 to 50 days, but live bacteria can speed it up to one week. To cycle properly, you need a source of ammonia, either drops or a few fish fed lightly. Follow for more expert tips on how to properly cycle your aquarium and keep your fish healthy. #AquariumCycling #NitrifyingBacteria