worm like hitchicker

Last night I observed what looked like a little inch worm swimming around in my tank. He was about 1/4 inch long, very tiny and was able to swim around fairly quickly and against the flow. He was out last night with the lunar leds on. He would also kind of curl up occasionally. Did a few...

I have a large rock in my new coral tank and it has a tentical about 2 inches long that comes out only when the light is OFF, it is as straigt as an arrow but when i turn the light on it goes curly like a snake back into the rock. I don't even know what or how big it is because the whole thing...

I got some corals today and when I dipped them a worm looking thing (pics below) came off of my candy cane. Is this a bad thing that came off? Should I re dip before adding to my tank? I used Kent Tech-D for my dip

I have a new aquarium that is starting up and discovered a really long worm like invert in my live rock. It is about 5 cm long and not much thicker than a hair. Under the microscope it appears to be a round worm that has irregular dark brown stripes around it’s circumference and a long red...