True about the wrasse, but not all wrasse need sand. Or so says Ty.
I'm still on the fence about it. I may order a bag of sand and see how things set up the first month or so. I do love the look of sand, white reflective clean sand. What I don't like is the algae that grows in it.
I went an purchased some 1/2" PEX line to run through the attic for my ATO/AWC. Now I need some time to shimmy around in the attic and get it installed.
That's true. Here's a list of wrasses and where they sleep. You'll be limited to lined, fairy and flashers but those are very nice as well. I would avoid Thalassoma, Coris, Pencil and Anampses species. Gomphosus are nice and active for big tanks, but they will eat small fish and inverts.