Besides nitrogen, what other macro/micro nutrients do tilapia supply a plant? I have heard that their feces does not contain any phosphorus or potassium – is this true?

For every system, the nutrients in the water come from the fish feed, not the fish. The nutrient profile of the feed is manufactured explicitly for a select species or several species that have similar nutrient demands. In general, as long as you stick to recommended feeding rates, and use a nutrient complete fish feed, it […]