Help, please! Strange growth in tank

Featherfin

Student
May 2, 2007
322
0
0
39
Savannah, GA
I have tiny little white, slightly clumpy stem-looking things all over my plants. It was only on my corksrew val, but now it has spread to everything, and is starting on the driftwood. I have an algae-eating shrimp, but he hasn't had any effect.

It doesn't move - it isn't hydra.

What is it, and how could I get rid of it? :help:
 
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