<a href=showthread.php?s=&postid=8677452#post8677452 target=_blank>Originally posted</a> by D-Style
I would recommend a canon 60mm Macro USM 2.8 or the 100mm Macro 2.8
both are great lenses for aquarium closeup photography.
Bear in mind though, that even with one of these lenses it will take some time using post-processing programs to get some truely beautiful photographs.
If you are a little tighter on budget right now, maybe you can work with th kit lense (which btw can take some stellar shots in the hands of an experienced photography)
If you end up buying a macro, you should double up your rebate right now (by purchasing a battery grip). You can save quite a bit of money!
Hope that helps