I stopped by the retail store today since I was in the area. I can tell once I move down there I'll be in there frequently. Nice place. Anyway, I picked up a black "Neptune" Vision Nova, once I got home I swapped out charcoal Nova I had for that one, and it seems to leak where the tank screws into the base. I flipped the tube around, and even tried a different base and it continues to slowly leak out of the threads. Is this a common problem with the Neptunes? I've had the clear tanks, metal tanks, and the charcoal tanks and never seen this before. Did I just get a dud, or is this happening with the way they are made?