自製高蛋白魚飼料 Duckweed 浮萍 Growing duckweed in your own tank is one solution during the warmer summer weather. Its not an algae but a very small aquatic plant. Because the water in an aquaponics system is rich in nutrients, it is well suited to also grow duckweed which is 30% to 40% rich in protein providing the water is undisturbed and slightly shaded. Many fish will readily eat this tiny plant that doubles in size rapidly and is an excellent supplement to feeding your fish, but you will need heaps of it to keep your fish alive. Recently while filming The Urban Permaculture DVD with Geoff Lawton, we came across a family who were growing around 100 silver perch fish in their family swimming pool. They said they don't feed their fish any fish pellets at all. So how did the fish survive? By eating the insect larvae and tiny crustaceans that grew in the pool but mainly – the algae that naturally formed on the sides of the pool. 在溫暖夏季中，水池中的浮萍就是高蛋白的魚飼料。浮萍是非常小的水生植物。因為在養耕共生系統中，肥水太多，就...