This is a 220 with a 5 year old DSB
(between 8 - 10 inch) It has 0 levels of everything. The secret is a lot of critters.
Nassarius vibex snails
These little "zombies" are the most efficient and safest scavenger to use in a reef aquarium. They eat excess food and fish waste to keep your substrate fresh and clean.
Florida Cerith Snails
Cerith snails do a very wonderful thing. Not only do they eat algae!...and detris...but they also eat cyanobacteria! They are long and attractive.
This snail is an excellent snail to get to clean up diatoms. The Bubble snail will cover itself with sand and feed on Diatoms while it travels along the substrate.
Most experienced reefkeepers strongly believe in the beneficial effects of bristle worms on the sand bed (see, for example, http://www.ipsf.com/bristleworms.html
I hold the view that bristle worms and other sand bed scavengers are vitally important components of reef ecosystems, both captive and wild.
The common name of these annelids from the family Terrebellidae. These highly active worms have bright red buccal tentacles which extend out over the sand bed to gather suitably sized particulate materials, which they "lasso" by tentacular contraction. It's fascinating to watch, and it sure beats vacuuming your sand bed. Here's a bonus: you can count on these worms to reproduce in your tank because they have direct development (no planktonic stage).
The Two Spot Goby
Also referred to as the Twinspot Goby, Signal Goby, or Crabeye Goby. The head and body are white splattered with orange markings. Its erect dorsal fins are distinctly marked by eyespots.
Usually the Two Spot Goby feeds off the bottom sifting through the sand for food.