just noticed a cream colored fuzzy/slimy looking thing, about the size and shape of a piece of puffed rice cereal. but in the early a.m., when it's all dark, and i turn on the tank light, this thing is about 1-1/2" long, all stretched out, and thin, like fuzzy- slimy thread. it quickly retreats when the lights hit it. it's been hanging onto a piece of cheado for a couple days. good or bad?