20 gal tall tank bowing slightly. Normal?

[LakeSho]

I have a new rimmed 20gal. tall tank. Set it up a couple of weeks ago, making sure everything is leveled. A few days ago I noticed a curve along the top of the front glass frame. The front and back glass is slight bowing. I put a straight edge against the glass and it's definitely bowing out slightly. Is it normal for a rimmed tank to bow slightly?

Here is a pic of the top frame. The camera doesn't pick it up as well, but you can see slight curvature.

 

[blaxsun]

My rimless 25-gallon tanks never bowed.

 

[Dom]

I'd monitor, but I wouldn't worry. Lots of variables such as glass thickness.

Who is the manufacturer?

 

[LakeSho]

Top Fin. 1/4" glass.

 

[Dom]

Top Fin. 1/4" glass.

I wouldn't worry. Good quality tank in my experience.

Did you contact Top Fin? Maybe you should just check with them to play it safe.

 

[LakeSho]

I have not, but will do so shortly. Thanks!

 

[CocoReef]

My aqueon 20 gallon tall shows the same exact bow of the rim however the glass doesn't bow at all. Could be the same case?

 

[LakeSho]

My glass is definitely bowing out slightly in the middle. I put a straight edge against the glass and it's not completely flat.