Being told that based on others having tried this it hadn’t worked yet for me might still be the only practical option. Plan however is either buying rubble or creating my own and placing that in a reactor to seed the tank. No clue if it works but like you will be in a test tank. Main build still years away. I have time to play and revise my assumptions. Only way to find out is find out.Build your scape and add one piece of live rock. Once your scape is going well after a few months remove it. That's what I'm doing in my small tester tank. Don't add any bottled bacteria. You want the goodies from the LR to spread.