What are the best filters for a large aquarium?

What are the best filters for a large aquarium?

Marc Grover (Professional Aquarist) gives expert video advice on: Generally, how do filters work in an aquarium?; What are the best filters for a small freshwater aquarium?; What are the best filters for a large aquarium? and more...

When you get into a larger system, specifically a tropical freshwater, what I like to do is instantly work in flexibility. The type of filtration that you can use on a large saltwater system also works really well for a large freshwater system. Typically what will happen is that if you do have a large freshwater, there is a decent chance that you are going to want to shift to saltwater someday. And I'm thinking ahead of the game saying "well why would you have to buy everything all over again" to accomplish that. So what I'm going to do is take the tank, have it ordered with an overflow prefilter box built into it, and then go to the wet-dry system that I would also recommend for a saltwater tank. It's a biological system, again the heart of every system, and it's really efficient so you can use that for any type of system and especially works really, really well on bigger systems, whether it's a freshwater or saltwater.