I usually don't chime in on these threads, but I was shopping around for a 90g tank recently and this was one conversation from the owner at a pretty "reputable" shop in Ft Worth.
A long story short, I called about a 90g drilled for overflow and closed loop and he said...
"You drilling that for a wet/dry?"
I said "No, this is going to be a full reef I won't need it"
LFS "What do you mean, how are you going to do that without a wet/dry?"
Me, "I'm going to have a Deep Live Sand Bed lots of LR and one hell of a skimmer along with a refugium with Macroalgae."
LFS "Then what's all these holes you want for?"
Me, "Circulation through a designated pump or closed loop."
LFS "So you don't need a wet/dry?"
Me, "No, I don't. I plan on having a full reef and don't need the nitrates a wet/dry produce. I try and keep my nitrates as close to zero as possible."
LFS "Then you definately need a wet/dry."
Me, "No, thanks they create nitrates I don't want in my tank."
A certain amount of silence and some deep thinking on the other end of the phone and......
LFS, "I still think you need a wet/dry."
Me, "AAAAUUUURRRRGGHHHHH.......cllick."
I can understand where he is coming from to an extent. But, to not even open up your mind to accept that there are other methods to reefkeeping is just frustrating. Seriously, how long has the Berlin Method been around? I guess that wouldn't make as much cash as a wet/dry though, huh?