Also! I wanted to mention this, and forgot. I used to keep min in a 20 gallon, and used a UVB bulb. Some say that these are pointless with white's, and I agree they aren't necessary. But I found when I provided them with it they seemed more active, and displayed a more "alert" behavior. I personally would recommend it, and they do also seem to like the company of another whites. My two boys we're inseparable lol