290G Peninsula Tank

[mseepman]

Okay so I have a question for those of you with external overflows. I rarely see any lower support on the overflow (like triangular supports), but it strikes me that the overflow holds a lot of water...sometimes 7-12 gallons and when I do the math on the weight of that...I get nervous.
Has anyone had issues with this? Have you seen some that have been built with supports?
When I got my first tank quote from Aquarium Obsessed they found humour in my worry about the overflows but they included the supports in the price because I asked for it.