Yea, while at homerdepot i was debating picking up some PVC tubing. I didnt but i also wasnt sure about the size of the tube to get for psuedo caves for the fish to go into and hide. Then again, I also havent decided to get a "sunken ship" with holes in it for the fish to go and hide out in there. I am sure at some point, I will be getting some PVC tubing for something.