So, I'm thinking about getting a little 10 gallon tank just for two bettas (with a divider of course). What is the best way to cycle it quickly? If i use one of the two sponges in my filter and some of my gravel from my already established tank, roughly how long would the cycle take because I know it would be shorter but I don't know whether it would still be a week or so or whether I could get a couple of bettas the next day.