Question about a bowed tank

[24storm]

I am setting up a 220 gallon tank. The tank had a glass center brace that i removed and replace with euro bracing. The glass is 1/2" thick. Now that i have filled the tank i see the front panel has bowed out about 1/8" at the top center. The tank has been filled and running for almost a week and there has been no change. Should i be worried about this or is this normal? I want to start adding rock but want to know if i should drain the tank and do something else with the bracing. I have talked with a few people who seem to think 1/8 on a 6 foot tank is nothing to worry about. Any advice would be great.

Thanks