ersico;1326731; said:im not sure but i think something leeched into your tank....lol....sorry i couldnt resist!
Space_cadet001;1326969; said:I'm also going with the leech, if you need to remove it from anything use a lighter or match, the heat tends to make them let go pretty quickly. If you pull them off i believe they spew/excrete back into the opening and i'm fairly sure it's mildly poisonous. Well it's definately not healthy.