My last post referred to this patch of Caluerpa Racemosa which has grown from about 3 heads to this, in a month.

Then I realised it couldn't be seen in the video I posted. Here we commonly call this sea grapes (not the bubble version).

Hopefully, I can keep it from extending further down into the path of the alveopora but to fill out and grow up and across this live rock. It's one of the things growing in this tank that I like the most.