Converting Entertainment Center to 125G stand

[IzzysPop]

Question for all your DIY’ers out there. I am looking to convert this entertainment center (https://www.afw.com/pueblo-7034-tv-stand) into a stand for a 125g. The only solid supports are the corners mad out of 2x4s.
Questions
1 - Can I build a square brace on the inside of the bottom and support it with some short legs to keep the open bottom aesthetic with just a few extra “feet”?
2 - Will two vertical supports along the long side be enough with the reinforcements on the sides?
3 - Any suggestions aside from bracing the heck out of it on the inside?

thanks!

 

[Sisterlimonpot]

It's hard to tell build quality and how things are fastened in that picture. With that said, nothing is impossible, however you may find yourself needing to do quite a bit to get it ready to hold 1500 lbs.