Is this Coraline?

[hsp]

I have started my tank on 1-February-2024: Red Sea Reefer Max G2+ 300.
Pictures taken under white light.
Thanks for helping to identify.

 

[tzabor10]

Looks like coralline to me. Hope you are dosing calcium

 

[crazyfishmom]

Agreed that this is likely coralline. Congratulations! Great sign that your tank is maturing well.

 

[hsp]

Looks like coralline to me. Hope you are dosing calcium

Thanks! Yes to Calcium dosing. Just measured yesterday: 500 ppm (Hanna).