I was originally going to use a small tuppeware container instead of the garbage can. Is that how you spell tupper ware? jesus, anyway the total cost including everything needed to make the thing function except the pond liner piece was $17.00 I just got lucky and had some pond stuff laying around. I think the moral of the story on this project is that for about $20 you can make a filter big enough for any size tank you want, just adjust the size of the can and the pvc stand. The filter in the video would filter my 55 g no problem.