I'm still building my new saltwater mixing station. I purchased two 65G tanks from Norwesco. I wanted to keep them off the ground by at least 8" since this is in my basement and there's always the potential to get a few inches of water if the sump or electric fails. I needed something that would easily hold well over 1100 pounds based on the fact that 130gals weighs that much. After some intensive googling, I ran across something called a "dunnage rack". They are used by restaurants to stack heavy bulk items (such as large bags of flour) off the floor. This is the one I bought:
https://www.webstaurantstore.com/adv...09DUN2460.html
If anyone is looking to buy a rack instead of making one from wood, you should consider dunnage racks.