confusing coralline

[christyf5]

another way to disperse it is to aim a powerhead at a heavily encrusted area

Personally I haven't figured out how coralline algae works, I have hardly any in my tank and haven't for a couple of years. I find it very frustrating to see taht I only have a couple small patches. I even recently bought a rock that was just covered as a little experiment to see if I just don't have the right conditions or what.