What you want are the acrylic tank adapters for the Sea Swirls. That allows you to mount them to eurobracing, center braces, etc. It doesn't have to be in the corner (they make a separate corner adapter that only fits some glass tanks).
I have a pair of 1/2" SS I am selling and they include the adapters. If the person who buys them wants the regular mounts, I could sell you the adapters separately.