What type of lens for aquarium photos?

[deathmatch782]

I have a Canon 40D.

Should i be looking at macro lens'?
Or is there something else that will work well?

 

[deathmatch782]

also, i already have a 50mm 1.4 lens

 

[SolidDetail808]

A lot people use the 100mm Macro.

 

[BlueCorn]

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