First of all, what type of fish do you've got? Determined by whether you've chilly water fish, tropical fish or maritime fish, some accessories is probably not well suited for the water inside the tank. A more recent addition for the aquarium hobby, the Pea Puffer is a little but https://app.box.com/s/f0ib8479xmek0efsci6bmog2ekf5y6u3