Is the bike running OK? If not, I'd pull the tank off check it for corrosion and refill it with fresh fuel.
If you see any corrosion there are products out there to cure the problem; Cream, Kream or a name like that.
well i was looking in the tank bc i was low on gas and I wanted to see how much 1 bar meant on the fuel meter. What do you think if I let her run out of gas? would that cause more harm than good? Is it easy to pull the tank?