Can anyone comment on the Cachet Eco-Wash for paper? I can't find much information on this unit, and the PDF file I downloaded only contains the first page of 4, from what I can tell. I am considering a smaller unit than my old 11x14 Calumet for washing 5x7 prints. The 11x14 works great, but the volume of water is overkill for a small batch of 5x7 or 8x10. Other comments welcome.