On Thu, 9 Jan 1997, Tesla List wrote: > Try filling the tube with water. Where are you getting the CuSO4 from ? > > Chris >> > Pentahydrate, or CuSO4 can be made, its a hassle and the quan is small for > the price so I just buy it from hagenow labs. Stephen. I think CuSO4 is the ingredient in the stuff that you can buy to kill the roots in your sewer line. Go to Hechinger's and check the label. Steve Roys.