Got a question. I've mostly been doing marine tanks 55 gal and under. Only one of my tanks have I ever used a wet/dry setup, the rest have been canister or box filters hanging off the back. I've never had problems so I am confident in how I run my tanks but I am going to be setting up a couple 90 gallon tanks and have been doing some searching for what I want to use for filtration. I will more than likely end up going with a larger wet/dry, but I came across a website last night that was advertising algae scrubbers. I've never heard of this but from what I gather it builds algae internally and the algae processes the waste chemicals. The site looked like a giant infomercial but I thought I would ask for the humble opinions of the message board posters. Anyone hear of or use such a system? Pricing was equal to wet/dry setups but I'm more inclined to go with what I know how to use.