You could add some Bio-spira and have your tank instantly cycled. I just did it for a 29 gallon and no ammonia or nitrite has been present. Just a nitrate level of 20 and climbing! But you'd have to add all of the fish you plan on getting immediately after adding bio-spira. Otherwise, you would have to add the fish at the regular rate, very slowly and doing mini-cycles. Good luck with your tank. 