I'm a newbee too.. So I'm guessing that the oxygen is provided by bacteria in the sand and live rocks? help me out here, I to have noticed that there doesn't seem to be an oxygenification system, so where does the oxygen the fish need come from?
one more question.. How is oxygen introduced into the Saltwater envirnoment.. Do you try to let water cascade somewhere?? Perhaphs it happens when the water goes into the overflow, perhaps it happens when water comes from the head to the top of the water line?
If I was planning on establishing a new environment from scratch in a 200 gal aquarium. Would it be worth staging the addition of LR as to keep the ammonia levels down.. Say add 50 lbs of LR at a time and wait till ammonia levels drop to 0 before adding the next batch.. I'm assuming this will...