Fish tank stage 3

This is a pic of my fish tank in progress. I will be posting new pics of it as I work on the terrestrial area of the tank. For those who are having a hard time with figuring out what the world is those black things are, they are (Halloween) tomb stones (4 in all) with green glass stones across black gravel. In the middle is a skull casting and behind it a fake tree stump. In front of the tomb stones are a fake log and a fake coral reef hill.