Basically you got a good deal, but you must invest in a larger tank. The 10 Gallon will make a great Hospital tank, or perhaps a grow out tank if you are fortunate enough to have a mating couple. Unfortunetly, that will produce another emergency (needing to purchase another tank as they start growning). a 30 gallon will give you some breathing room, but you will be happier when you upgrade to a 55 gallon and decorate it with a lot of rocks and caves. the Advantage with the 30 gallon is it gives you the option of using the filter and heater you already have. Just like fish, your hobby will keep growing. You must stay ahead of this growth. Bigger is always better.