Congrats on the upgrade but I think you need a better stand. With the tank hanging over like that, it could cause it to leak, or even crack from the stress. The entire length and width of the tank should be supported.
"Make it turtle proof, and they'll build a better turtle."
Sweet upgrade. You can pick up a tank stand for about 50bucks from bigals. You could also buy a few cinder blocks and place a board over them to make a stand. Hate to see that awesome tank get a crack in it.