I have a good 4.5-5 inch sand bed made from ootlic style aragonite sand.
Chaetomorpha algae and Several hunks of liverock.
I have witnessed the pod larva floating in the water column, I have a growing number of amphipods, copepods, isopids and have several chitons running around.
I have Fire worms, Terebellidae, Cirratulids and Sabella worms, melanostigma, chaetopterid worms, and spirobidae worms all over the glass rocks and even the heater.
I also have a couple of unknown hermit crabs, a red leg hermit.
A fighting conch, micro snails, Turbo snails, Stometella vara , a nassarious snail and astrina starfish.
There are even sponges growing in there