330 gallon tank water circulation

[Bohhica67]

I just bought a 330 gallon tank. It's 8 feet long . I want to find out what is the best way to get plum it for water movement. The tank has no holes in it . I'm hoping to get help before the guy shows up to drill the holes. Its a glass tank so I don't want to have him come out more than once . Any ideas would help thank you