Am I right about what this is?

[Aquattro]

None of my tangs ever ate that stuff. I'd harvest and move to the trash

[smokinreefer]

I used to elastic clumps of it to a rock for my tangs to eat.

But honestly, it can be a real pain if it starts growing in your display.

Having said that, I will hopefully never see that stuff again!

My advice is, get rid of it. There are way less invasive stuff you can grow for your tangs to eat.

[The Guy]

Ya maybe I just stick to Nori for the Tangs, plus there's that chance of a piece coming loose from the bundle and growing in the DT.
Thanks for all the input everyone.