Themonsterisme
Aquarium Advice Freak
It will take longer than 6-8 months for coralline to cover everything. Heck it doesn't even start to grow until about 5-6 months. Also, you will want some fish in with the corals to start. Fish waste helps corals grow
Uhhh...it only took a few weeks of scrubbing with a tooth brush to get the coraline to spread ...(could have swore it was you,mr x or Greg that told me to use a toothbrush lol) been a few months and most of my base rock is covered with patches of it...it's not fully covered by any means but I'm pretty sure 6 months and it'll be pretty good