invasion

What that heck is on my urchin?? He has been carrying it around for almost a week and it has not moved. Its fluorescent and only appears yellow under blue light.

I can’t believe that our species has not yet accepted the concept that letting nature take her own course is probably more reliable than letting “Experts” manipulate the natural system to save it. https://www.cbsnews.com/amp/news/flonduran-elkhorn-coral-crossbreed-honduras-miami-reefs/ The...

These little guys invaded my tank out of no where I’m not entirely sure what they are I think some type of worm I don’t know what to use to kill them please help

idk how I got these tiny feather duster guys in the first place but they are getting completely out of control. I really don’t mind them on my rockwork but they are completely covering my eagle eye zoa. I’ve tried picking at them and brushing them off with no luck.. I heard from my lfs that a...

so i got invaded by these darn Vermetid snail absolutely hate and want destroy them all within 2 days i had 4 on my hammer coral keep him 1/3 the size have liek 3 on my toadstool I’ve tried ripping them off currently ordered some stainless steel clippers to start chopping but is there any...

So I have this stuff that has pretty much taken over my tank and I can't get rid of it. I'm looking for an ID and an eradication plan that is anything short of a total teardown.

hey guys i have a few questions on flatworms but first let me add some background information, i currently have a nano aquarium set up for a G. chiragra mantis shrimp and i has some other cuc in there as well but no corals or fish just a marine planted tank if you will dominated by macro algae...