I have one on the way. it's the 5 watt Odin from Best Lasers. I've got a tracking number so I hope they will at least send something, and not just keep my money. or maybe send just a brick. anyway, i've been running this through my head a lot , and I mean a lot, has anybody had any affect on the paper behind their back glass? I've got a black plastic paper taped up behind the back glass. will it go through that? I mean, they advertise that it will cut through paper, but that is without the front class and 18inches of water, and the back glass. still, what do you think. also, what about the silicone sealant for the glass and overflow box? or the plastic overflow box itself. I've got stuff on the overflow box, (algae, cyano, bubble algae, and hydroids all on the back glass and overflow box I want gone. I sure don't want to cut a hole right through the overflow box. I saw that video on youtube where they cut through a whole bunch of plastic slim CD covers that were all lined up like dominoes. anyway, any experience anybody? anybody?