I'm insanely anger with Petco. I went to go and get myself a java moss ball. So i was looking through the tanks seeing the healthiest fish with moss balls in their tank so my fish wont get what they have. Bu t i do QT it for a week. I asked the man if it was pure moss. No styrofoam on the inside or anything to fill it up because it was floating, TIED to a weight and wrapped around the moss. So i was like what the heck, why not. So i got it put it in it's QT tank, i squeezed it thinking it just need to soak up some water. Wrong. There is something inside, hard, felt like a rock..Is this normal? Was i just fooled by Petco or is this how it is??