If, in a few years, you are suddenly overcome with a sense that there's something fishy about the lettuce in your salad, you might be on to something. There's a chance it was grown with fish poop.
Summer unofficially ends on Labor Day, a time when many trek to the beach to lay out on—if you’re lucky—luxurious white sands. But while you’re enjoying the feeling of the sand on your feet, just remember: Much of that sand is actually made up of fish poop.
To find out, he's set up an experiment where he feeds dried food waste from a student cafeteria to fish in freshwater tanks and uses the fish poop to grow Boston Bibb lettuce.
What Eats Fish Poop...good Clean Up Crew? in the Freshwater Invertebrates forums, part of the Freshwater Fish and Invertebrates category.
Ok, so nature always has a "clean up crew". Ravens eat roadkill, etc. What does this in coldwater for say fish poop and waste? There must be something to keep bottom clean?...