Best lens for tank pics

[knowles101]

Hey everyone,

I just started my new Cadlight 25 AIO tank and I am wanting to document/post my progress... I have a Canon 50D with the standard 17-85mm lens. I was thinking a macro lens? Any input would be great.

Cheers

 

[Misled]

http://www.reefcentral.com/forums/showthread.php?t=1762095