So I am new to Aquaria Central but I have been posting on Monster Fish Keepers for a while. I recently picked up a 40 breeder that I plan on using for some Shell Dwellers but I am not sure as to what species I am going to be getting. I am planning on using sand and a few rocks for the decorations along with the prerequisite shells and a few Anubis. My questions are just pretty much about filtration and tankmates. I am thinking about using a wet / dry that I have or a Fluval 405 that I have. I am thinking that if I use both, this is going to be way too much water flow. If I use the wet / dry, I would think that I could make a spray bar for it. If I did use both, would it be feasible to run the 405 into the wet / dry so that the intake and return both go into the sump? I'm mainly thinking to use the 405 as just another source for biological, not so much for mechanical. When it comes to tankmates, I'm thinking about some Altolamp. Calvus but not sure about what else. Any idea's?