My tank come with a Whisper Power Filter. It just hangs on the back of the tank. The Air Pump I bought just came with the eletrical part. I had to buy the clear tubing and the Air Stone. When I got home I seen I also needed a Check Valve. But I'm still lost. Do I need another part? Or do I just place the the tubing on the Air Stone and place it under the gravel or what? Also can I go ahead and put with water in the tank before I have the complete air pump system. Dont laugh! I know nothing about this. I am doing this for my kids.