I had a bettafish before, and I have a 1 gallon aquarium with a filter(I think it's the kind that pull the dirty stuff down into the gravel. Do you think that's enough if I change part of the water daily. If it isn't sufficient I would like to get a bigger tank and start a sorority, but I don't know the minimum amount of gallons, I'm thinking about 5 females. I'd anyone could help me get started with bettafish that would be great. Thanks