There are lots of these---mainly in the sump. I am assuming they are not good---but I don't know what they are to know what to do. Thanks for any help!!
http://lh3.ggpht.com/_83jyfXIJXwI/TAwGVpJIiYI/AAAAAAAAAbg/CsM3QOp2rt4/s400/IMG_1436.JPG
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