I never cared to read any of those past topics regarding planaria, until now (I can't fin them though). I was watching my shrimp, and I saw this little white worm thing moving on the glass. It was flat and small (length of a new born CRS). I figured it's a planaria by the way it looked and moved. I'm concerned about it. I have no idea how it got there, and if there's more. Suggestions on how to get rid of them?