Hi everyone. My boyfriend was in the pet store with me last night and he suddenly fell in love with the Bettas in the little cups. He then told me he wanted one so now next week he is going to be the owner of his very first fish. I have had bettas before and everything but only when I was younger and they were part of a bigger tank setup. I was wondering what exactly he will need. His room (where the tank will be) is always quite warm and the temperature will definitely never go below 22 degrees celsius so is a heater still necessary? He was looking at an aquarium and I think it was 3.5 gallons or around there so would that be enough? He wants it to have enough room because he thought they looked so sad in those cups. He will be getting a filter and I think he's leaning toward this one: http://www.petco.com/Shop/petco_Pro...pingGuideID_16_ShoppingGuideElementID_39.aspx so will this be enough filtration? He will also have plenty of plants and maybe an ornament as well. Does this sound okay?