I am looking to increase my Betta collection and there are really not decent thrift shops in my area. I looked on Craigslist and found a 10 gallon tank with heater, filter, and hood for $30. I'm not sure if I should jump on it or just spend a bit more for a new tank. The person is local and if I went, I would go with my father to a public location for the transaction. I want to know if there are any risk involved in getting a used filter or heater since they are harder to clean than a tank tank is. Part of me wants to jump on this opportunity, but part of me wants to start from scratch with all new equipment. Any thoughts?