on my 75 gallon, all I use is live rock and a protien skimmer.......no sump, no wet/dry.....I have a penguin double bio wheel running on it but without any filter media in it. Maily use it to airate the water, water flow, and an easy place to carbon my tank. The pro.skimmer adds more airation and does a graet job for mechanical filtration. I have power heads for more airation and water movement but the live rock is doing 100% of the bio filtration and the only mechinal filtration is my pro skimmer.

I have not had any real problems with algea, all my corals are thriving, fish are thriving, and my water stays consitant for the most part with great readings.

Just use plenty of cured live rock and a good pro skimmer and keep the water moving with plenty of ox. exchange and you should be fine. I think the biggest thing is the ox exchange, just make sure you are getting plenty of it.

But I do agree with other post, if you are going to use a wet/dry remove the bio balls and replace with live rock. Never used it but was suggested to me by someone that I trust the most in the hobbie! MikeP....