lifespeachy

Allrighty, I'm going to get it out, now I know it's unwanted I'll get brutal Thanks for all your help and quick responses.

It won't suck up, it's wedged into a rock and can't be dislodged.

OK, the reason I hadn't thought of algae is that it is hard and also big ie 1" diameter. Can you pop them?

Hi, I have have an addition to my reef aquarium that seems to be growing and also multiplying (a number have "Popped" up in new locations in the last few weeks) It looks like a large shiny black marble and is quite hard to the touch and slightly prickly. Please excuse my photo, I'm just getting to grips with the camera, this is the best of a bad bunch. Thanks in advance.

I have an Aquaman Aquarium, Made in NZ, which has polished edges, & black silicone, beautifully made. If you want quality it's out there.