What we've got now is a double pane of glass that is filled with water. The sun's radiation heats and purifies this water. We won't know how practical it is until we try it. So I want to get a good prototype working.
Most of the heavy lifting is complete. We'll just be putting a tank on this one and fixing up some potential leaks.
1. 1"x3" lumber - 12' long
2. 2 panes of 6mm (1/4") glass - 3'x18"
3. 2 or 3 tubes of silicone sealant
4. A 4 or 5 gallon container about 3' tall
5. Some 1/2" flexible pipe
6. Various pipe tees and ball valve
7. Assorted screws and nails