Coralline covering substrate in two year tank

[Robert1994]

Two year old tank with live substrate (gravel), but virgin rock feature. Went thru several evolutions including Aiptasia elimination. Introduced coralline one year ago. Tank has really stabilized and fish are doing well. Coralline has attacked centerpiece and is doing a great job of eliminating the Hair Algae that seemed to be out of control. I am used to vacuuming up the gravel every night, but tonight realized I'm collecting patches of pink/purple coraline that seems to be smothering my gravel. Normal ?

 

[fishface NJ]

photo

 

[iMi]

Good thing. Unequivocally.

 

[mdb_talon]

Agree on need for photo. I am doubtful of it being corraline growing on sandbed.