This is the schematic for the project. I'm using an IRF520 transistor (http://www.futurlec.com/Transistors/IRF520.shtml) which goes from left to right Gate->Drain->Source. So the problem is that when gate is connected to a pin on the arduino the transistor will always be open regardless of what that pins state is but if I pull it out the transistor closes. Any help would be appreciated. imgur.com/a/dYliz EDIT: Added Schematic link
Based on the newest schematic, Your pull-down resistor is too strong for the Arduino's output to overcome. A 220Ω resistor pretty much guarantees issues. Try bumping it to 2.2kΩ or 22kΩ.
See the two answers in Calculating the pulldown resistance for a given MOSFET's gate for more info, one math heavy, the other one more plain terms.
Well to all of you sitting on the edge of your seat awaiting an answer to this trivial problem I have it. The transistor was bad.