Some years ago I had a reef tank. Most people start a reef tank by adding live rock. Those are rocks straight out of the sea. It's amazing what live rock realy

Some years ago I had a reef tank. Most people start a reef tank by adding live rock. Those are rocks straight out of the sea. It's amazing what live rock realy means. Every cm³ is covered with some form of live. Worms, crabs, starfish, anemones, you name it. We know so little about this world. It's a shame we are busy destoying large areas of the ocean.