Hi and welcomeIt's going to long process to transform lava rock to live rock. It's better using Living or Live Rocks, it's become the most effective biological filter for the safety of the marine plants and animals. live rock for saltwater aquarium contributes to the increase in the overall quality of the water. the rock gets settled down to any preferred location to run the biological cycles.
Ha, opps just noticed this.Hi and welcome
This thread is 10 years old, not sure if you'll get any replies