How to get good coralline coverage in the reef aquarium.

Go to the rock pools and find some and scrape off from under rocks and in the open, they are different species or buy a section of dead coral/live/base rock from the shop with coralline coverage and scrape it off and sprinkle these scrapings into the aquarium.
The water temp should be no less then 21c to a max of 25c, there should be no testable nitrate or phos in the aquariums waters with heaps of over all flow to the level of 15 to 30 times your aquariums water volume per hour and over dose magnesium and calcium/lime slightly each day.
This is what occurs in my aquarium, its happening in every part of my system where there is any low to near no light with good flow and that’s near everywhere!
The first pic is late last year I think it was just a few months after I seeded the tank with some collected corallines of this species and the next is now.

Two weeks down the track and there is a half inch of new growth.