Flatworm id

[I know most flatworms are harmless, but I'm not sure what I have. I AM fairly certain they're flatworms, and they don't display the "three lobes" of the dreaded red planaria. There aren't terribly many of them, and they all seem to be relegated to the glass...mostly in the refugium. Any help appreciated before I bother Dr. Ron with this.]
 
[Those colors are pretty vivid, but you have a yellow light over your refugium. Are they more beige or white? If so, they are benign, and reef-safe.]
 
[Some are beige, some are white-ish, and some almost have an orange tint to them. They are almost all very small, and all of them only have two 'lobes' on the tail.

You would guess benign then? I didn't figure they would be bad, or else pictures of them would be spashed all over Dr. Ron's forum (that was my hope anyhow).]
 
[I 'think' I read Dr. Ron say that FE was designed to kill red planaria. He mentioned that there wasn't any proof it would kill other flatworms.

These don't seem to bother the tank. I've only seen them on the glass. I wouldn't say they are at plague proportions, because sometimes, you can't even find a single one when you're looking. There's all kinds of weird stuff in our tanks that we have little idea about...but just the word 'flatworm' seems to invoke fear.]
 
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