Can anyone ID this worm?

I have a small colony of these worms. They have these iridescent hairs (that shimmer blue, green, red and purple depending on the angle the light hits them) sticking out of a hole with two tentacles in the center...

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The last peanut worm is gone

This afternoon I attempted to removed as much of the white fuzz as I could. Just inserting the mini-siphon stirred up the water enough that the last remaining hitchhiker swayed and collapsed. It appeared to deflate and pollute the...

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Water test after removing the last worm

I tested the water after removing the dead worm and doing a partial water change. Since the water was excellent this morning I wanted to see if there was any spike significant enough to skewer the readings even with...

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