Hey guys, I bought some live rock recently, and just today I noticed that there were two bristle worms running around in my tank. One is about an inch long and is pretty thick, and the other is about 2/3 of an inch long and is really thin. I've read some stuff about them but I've gotten mixed opinions. Some say they're nice and are good scavengers. Others say they are pests and can grow up to 12 inches long and eat your fish and anemone. What's your opinion of them?
Unfortunately, my tank has had a recent brown algae burst, so the ground is covered in algae. Will they eat that?
Also, I found some sort of small creature that looks what seems to be an amphipod. I'm not sure and it was too small and fast to be captured on camera. But, it was white, had a small sleek tail and antennae (I think).