Hazy glass but crispy clear water

[pi-eyed]

PLEASE HELP!!!!!!

Hey everyone. I bought an older 180g glass aquarium. I cleaned the glass inside and out with a razor blade but there is some haze that I can't remove. The glass is smooth and the razor blade removes none of it. I filled it and cycled it. The glass makes the water look cloudy,but if you take the tops off and look down into the water it's crystal clear. I've searched around this site --through the sticky posts and can't find anything. I've heard of using vinegar and club soda but never tried it.

Any help will be greatly appreciated,
Chris

 

[buddha1200]

since the tank is already cycled not much you can do now,but if you ever drain it the vinegar should work,(just make sure you rinse the hell out of the tank before you refill it)