XS Scuba 80 Cubic Foot Aluminum Tank

Don:

Hello, Im wondering if there is a mistake in the buoyancy specs for this Al80 tank. It shows a weight of -1.4lbs for a full tank and a weight of -3.4lbs for an empty tank. Should that read just the opposite? Also, is it possible to substitute a DIN valve for the yoke valve? Paying the difference is not a problem. Thanks!

Bill (Certified Scuba Instructor at Scuba.com) :

Most Aluminum Cylinders become buoyant as they get close empty. The best way to order the cylinder with a different valve is to contact us directly at 800-347-2822.

David:

The description indicates this cylinder loses buoyancy as you use it. This is obviously incorrect, so what ARE the correct specs?

Bill (Certified Scuba Instructor at Scuba.com) :

The empty weight should read 3.4lbs not -3.4lbs.