bowed front, the only way to go is cast acrylic. And it is an art. Depending on what size and all. I have looked into some 1 " cast acrylic. 4 x 8 for 400 gallon reef tank i am going to start this spring. I think it is about 550$ a sheet. I think it will deff. be cheaper just to buy one with a bowed front. I think you could get some 3/8 or something but it is still all expensive and requires alot of time to make it nice.