Bare bottom vs not?

My Jawfish and Goby need enough to burrow so at least a couple of inches. I would think Wrasses would benefit with about the same but might be happy with an inch, just enough to lay flat.
 
Haven't read this entire thread so forgive me if I am restating what has been said. :-)

If you want bare bottom but still want a wrasse, hide a tupperware bowl of sand behing your rock work. The wrasse will find it.
 
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