Kari ... I like the idea of the remote sandbeds ... I have about a 6" bed in the sump and about a 3 " in the refugium and anywhere from 3 " to 4 " in the display tank ... I saw your " lawn " in your tank and thought it looked pretty cool ... in hindsight I would probably have done a very shallow bed in the display or even none at all ... the GSP looks very cool and would allow me to do a all SPS tank with heavy circulation and not worry about sand blowing everywhere ... hmmmm
Cheers