the tightening tool is available from your local dealer or auto parts store. bring in the filter so you can test fit it. and yes, 2 turns is tight, but that is what is needed to keep it from backing out with all the vibration of the motor.
As long as you clean and oil everything before you put it together 2 turns using the right tool won't hurt anything. I've always just tightened by hand which is like 1 1/4 turns but I have mine safety wired which you could easily do.