The number you have listed is not the output pressure of the tank. The 3000psi is how high the tank can be filled, it is not referred to as low pressure. The 2 common fill types are 3000 and 4500psi.I am kinda new to the sport and haven't played very long. I am looking at a marq 7. On a site that I looked at it said that I need a LP or HP tank, but LP is recommended. Will a Pure Energy 3000 psi tank work with this gun? Sorry for the stupid question.