after some research. I've decided to make a small stream in my 20 gal long tank. I'm not handy with foam and cork is way too much around here. So what is the next easyest thing i can get to make a small stream. It's going to house a dart frog so can't be too big. Any help would be nice. want something like the one in this video
http://www.youtube.com/watch?v=YPkmuu00JO0&feature=channel_page
http://www.youtube.com/watch?v=YPkmuu00JO0&feature=channel_page