not sure what that is , looks normal. Is it giving your plant problems? Id say dont worry about it unless you see it causing a problem. I like the picture on your imageshak where there is a guy kissing another guy on the neck.
Sorry for the photo mistake i will get rid off it asap.
To be honest at the moment i don't see problems whit it but i hope to not have probs in the future eheh, yesterday i moved a clip fan pointing directly on the bottom of the plant and seem that the situation is gettin better i think, anyway i hope to be fine thanks for the help ilikebike