Acrylic tank experts

[Xxflounderxx]

I have a 84Lx20Wx36H acrylic aquarium fully braced. All sides are 3/4 with top and bottom 1/2. I recently moved the tank witch it was purchased second hand. Now the tank is visible down the length of the aquarium and I can see bowing about 1/2in. Using a 4ft level across the front. It's very hard to find any information. I just want to know if the tank was manufactured correctly and is safe.

 

[Dburr1014]

I have a 84Lx20Wx36H acrylic aquarium fully braced. All sides are 3/4 with top and bottom 1/2. I recently moved the tank witch it was purchased second hand. Now the tank is visible down the length of the aquarium and I can see bowing about 1/2in. Using a 4ft level across the front. It's very hard to find any information. I just want to know if the tank was manufactured correctly and is safe.

I am by far an acrylic tank expert as I've never owned one but I believe that they are designed to bow. I'm sure you'll get some more confirmation.