I just got a filtered and heated 10 gallon for my crowntail and his tank looks kinda empty. I am thinking of adding about 3 tetras, either neon or cardinal. Debating of adding a snail or an oto or two. So far all I need are alot more gravel and two plants, which I am getting tonight. Also, I might split the tank and put my other betta on the other half, I just have to order a screen for that becuase Petco doesn't have one. AND, I got a fifty watt heater for only 5 DOLLARS!! I think it was missing packaging or it was marked wrong becuase it works great! Is fift watts to much for a ten gallon?