Help identifying these purple and orange things (algae, sponge..mushroom??)

[fishyfolks]

Originally Posted by hillegom

You have so many. Take one out and dissect it.
Are they hard, soft, liquid inside?

So, I took one out a dissected it. It was pretty stuck to the power head but when I gave it a good tug it came right off. When I cut into it, it was just kinda full of snot. Haha. It was just clear thin gelatinous grossness. I don't think that helped at all with my ID though.

Anyone else have any other ideas. Since they all kind of showed up within a week or so, I'm worried they're something harmful.

Thanks again.