I am trying to set up my new FX5, but I'm fairly new to these things and have never set one up before. I can figure out the plumbing and see how it all works, but what do you guys have in each tray? The "kit" came with 3 polishing pads, a box of Zeo Carb, and a box of what looks like plastic noodles. Where do these go? Don't the carbon rocks have to be in something so they don't go everywhere and tear up the pump? What else is in the other tray/s? Thanks.