Hello, I have been trying to get rid of the little white worms in my take for a few weeks now. When I stir up the gravel a little a hole bunch or little white worms appear, they are about 1/8" long and very thin. My fish seem healthy. But I can not get rid of them. It started when my filter was giving out and I did not know it. The tank started getting cloudy and I could not get the water clear again. It took me a while to notice that my filter was not working 100%. I have a new filter but still can not get rid of these little "white worms". Help please?