I was thinking about buying a 20-gallon and already have an established 75-gallon. Could I just put some filter media from my 75-gallon into the 20-gallon filter and put some cycled water from the 75-gallon into the new tank to instantly cycle it? Like would it be cycled in 24 hours? Is there more to cycling? I have giant danios which I know are used to do fishless cycles so should I also put them in this tank for 24 hours and then test the ammonia and nitrite before putting in my new fish (multies)?