What do you have?
I used to have something of a mixed media 3-4" DSB....it is made up of teeny carib sea Puka shell, aragonite and
crushed coral... it seems to be slowly dissolving away or because of siphoning, but seems its only about 3" in its deeper parts now.
i noticed DSBs seem to have really gone out of style now.... more than they were last summer, so i'm wondering how many are left, how many are considering using one, how many want other methods and how many are barebottoming....
(speaking of which, my RUMP is a BareBottom, as if you wouldn't guess

and you should see all the crud thats settled out of the water)