I've got some of that on one of my rocks too. It is faint yellow and it has been there since maybe the fourth month after I started that tank. Fast forward 2 years and it has grown a little bit but nothing like the purple shades of coralline. So maybe it is something else?
Keep it up
Good going brother
Unfortunately, I don't know what that is for sure but I have had similar things turned out to be a sponge.
I've got some of that on one of my rocks too. It is faint yellow and it has been there since maybe the fourth month after I started that tank. Fast forward 2 years and it has grown a little bit but nothing like the purple shades of coralline. So maybe it is something else?
my urchins have eating loads of it , lol
@@haymatr Urchins are worth getting then?