Hijack away. I don't care. I find it all interesting. That red stuff you see at the top of my tank is Cyano algae. Not Coraline.
My last tank had very little Coraline in it but was very healthy. And I credit it to dumpiming my skimmer and going with a scrubber.
Hoping to attain those same conditions again.
Thanks for answering the idea of dry rock storing phosphates SM. Saved me some computer time and beneficial bacteria growth time.
Now on topic of my thread. I am getting the green stuff and coming in quick now.