Ive used a few times and so far it works well. You don't have todo anything, just open the botlle a pour away. just make sure to have a smooth bottom. If it is not flat it dry uneaven and look bad. On my first dio i tried to make river bottom with rocks andit looks like @#$%! The stufff only dires like an 1/8 on an inch so have the river/lake/ocean be raised andpaint it to ad a deeper affect.
John
P.S. Whats planned for the dio???