Wet Dry vs Sump

[tomclx]

Can Anyone help,
I currently have a wet dry for my 40 gallon reef tank, However I have been told that a sump would be the best thing. If a sump is the way to go, how do I make a sump. My wet dry has been doing great for about 5 months. However If a sump is the way to go, that is what I will do.Anuy suggestions?

 

[birdy]

Well my first question is if this is a reef tank or a Fish only tank?
Honestly if it isn't broke don't fix it IMO.
We need to know a bit more info, like tank size, Live rock and sand in tank, bioload. Pretty much tell us anything you can about your system.