Warranties are sometimes dubious. The restrictions are sometimes pretty ugly. They generally do include some or all of the following:

You must install it on the manufacturer's stand (which you are doing)

You must install it per manufacturer's instructions

If it fails, you must prove that it failed because of workmanship - if you nicked a seam cleaning the glass, if you modified the tank in any way, etc.

You may have to return the tank to the manufacturer - that can get VERY pricey.

The warranty may not be transferable.

You may have to pay shipping for the replacement tank

If the company goes out of business, files bankruptcy, or is sold (they usually just buy the assets of the company, and leave liabilities like warranties behind)

The cost of a failed tank, in livestock and water damage, is usually a fraction of the cost of the tank. What do you do in the interum?

This is why when the tank we bought became available, we jumped on it ("brick" tank - no bracing of any kind, because it's a beast - 3/4" glass). I really, really didn't want a tank failure.