Hi, If your turtles don't fancy Val, try them on Duckweed. After doing a lot of research I have found that Duckweed's nutritional value is as good as Val, if not better. They are calling Duckweed a 'Green' wonder food for all forms of livestock, birds, fish and other animals, and even humans. I have been feeding my turtles both Val and Duckweed and they have a distinct preference for Duckweed. In fact, they go nuts over it. Duckweed can sustain a turtle for its whole life without any other food because of its nutritional value, although we all know that variety is the best thing we can give our hard-shelled friends. It also has protein, is high in Calcium and is at the perfect Calcium to Phosphorous ratio (Ca : P) that is required by turtles for shell and bone development. I wish I had investigated Duckweed nutritional value years ago. Role in the habitat: Duckweed is an important food for wild waterfowl and fish both directly and as a source of food for small creatures that are in turn eaten by the birds and fish. As it grows, Duckweed absorbs nutrients from the water. Thus it has a useful role in controlling the growth of algae, both by removing nutrients and by shutting out sunlight as the Duckweed covers the water surface. Algae absorbs oxygen and as it decays, it further reduces oxygen levels. Algal blooms can thus severely affect aquatic life. By shading the water, Duckweed also keeps it cool and thus allow for more dissolved oxygen. And by covering the water surface, it minimises water loss through evaporation. Uses as food: Because Duckweed floats and require little structural fibres (5-15%), it has more nutrition by weight compared to other vascular plants: protein (15-25% in natural conditions, 15-45% when cultured under ideal conditions), fat, nitrogen, and phosphorus. It also contains higher amounts of essential amino acids than most plants. In fact, it most closely resembles animal proteins. It also contains large concentrations of trace minerals that make Duckweed good supplements for animal feed. In addition, they are easily cultivated on small strips of wasteland and easily harvested. In fact, Duckweed is eaten by people in Thailand. There are also projects to look into the cultivation of Duckweed as feed for fish (carp), poultry (chickens, ducks), livestock (pigs). Duckweed is also an effective "crop". For the same amount of nutrients, Duckweed grows on 10% the area needed for soyabeans, and 20% that of corn. Because it has such low fibre, the whole plant can be used, unlike other crops where only a small part of the plant can be eaten.