Ya know what John, I have the benefit of no sand in the front, and when I mean a benefit I am refering to not having the problem of sand getting under my Great White algae magnet which may I mind you is going through 1-1/4" acrylic. But with my old tank I had a few times that happened to me and scratched the tank. But there is also a large amount of sand near the rear half of the tank which alows me to still have a habitat for those wrasses that need it. In my sump which is 150g has a large dsb in there, so I think I am reap the benefits of both worlds!!
I hope your new tank is doing well also, take care and tell your parents I said Hi!!
Brent Higa