I have 17,287 of those and I don't care in the least. I figure they are free inverts and they have never hurt anything. The fish that eat them like a six line wrasse are so fat, they can't swim. 

Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.

The fish that eat them like a six line wrasse are so fat, they can't swim.![]()

I waited planaria out. One day while I was treating for cyano with erythromycin (wasn't the first round, more like 3rd), they started a mass die-off after about 2 years in the system. Siphoned out all I could see/get to and ran some carbon, did a water change the next day and all was good. They do bother some corals but I found that periodic vacuuming made it nothing more than a nuisance.Today I noticed my clown eat one off the glass right in front of me. I have a 160 gallon that’s showing a handful of these trying to figure out if I need to do something about it now or ignore it. This seems to be mixed opinions. It took 8x the recommended dosage of flatworm exit to kill them in a 45 gallon tank and even then I still see randoms that didn’t die

