Madmak's 200G Reef Build

[gregzz4]

For feet you can use appliance ones. Drill and tap the stand if the bottoms of the down tubes are sealed, although you'd probably be better off having someone weld some 1/4" plates under there to drill and tap. The more threads the better. I think the thread rule is basically 1/2 the size of the thread for the metal thickness ie; 1/2" thread, 1/4" metal.
Also, you could just use bolts if you can't find appliance feet.