This is a modification, very minor, which accommodates growing bean sprouts rather than actual plants.
I have kept the sprouter separate from the reservoir containing nutrient ONLY because I am unsure of the ramifications of eating sprouts grown in nutrient rather than straight water. I am also unsure if there would be any health concerns over using the same water for 3 to 4 days. I did it and the sprouts came out looking, smelling and tasting fine. I know, however, that is plenty of time for harmful bacteria to grow, so if anyone has experience in this area, comments for myself and anyone who might build this would be greatly appreciated. I know that I can add chlorine, but would be interested in any other methods for controlling bacteria/toxins during the growing or washing processes.
Conveniently, many wide mouth plastic containers fit inside a 2L bottle. I chose peanut butter jars for this over a yogurt container, as in Toilet Tank Bean Sprouter
, because the water enters the system from the bottom instead of the top. The yogurt container would work, but the 2L bottle would have to be trimmed to the correct height.