I am interested in getting some bettas. How much room do you suggest a betta to have. I know those half gallon containers they sell as betta homes are too small and would like to have a tank for comfortable for them. would a 2.5 with a divider be suitable for 2 or is that more of a 1 betta home. Im also considering a 5gal with a divider if a 2.5 wouldnt work. But if I decide on seperate containers for each what size would be suitable? Also, what about a heater? do they required one or is it only in larger tanks that heaters should be used? Im also considering getting some ADF's for the bottom if I get a 2.5-5gal minibow. Any other info that Im missing I should know about as well?