How deep is your sand/substrate?
 

Simple question... how deep is the sand or substrate in your tank(s)?

Tried for about an inch. Now bare in front, some places 3 inches :)

1.5"-2" Crushed coral.

substraight
 

between 4&6 inches-depending on the gobies and wrasses

About an inch. Half crushed coral half aragonite

0.0" :mrgreen:

1"

about 2"

1-1.5"

1 1/2" - 2":

seafloor caribean

4"-5" in my refuge:

3/4 seafloor caribean 1/4 crushed coral/shell's