Hey gang I am working on a fishless cycle in a 40 gal tank with live plants and have recently noticed an abundance of white fuzzy stuff (cotton like) covering everything in the tank. All over the plants. On the plant leaves it almost looks like greyish balls all over. Then some of the plants of long strands like 2 inches long hanging off the end of them. Some of it almost looks like a light green color. It looks horrible!

Any idea what it is and how can I get rid of it? I am afraid that it is going to cause the plants to die.