Building a Home Aquaponics System: The Basics
The author glosses over the true source of the magical, "free" fertilizer: "some fish food." You have to feed the fish. I have never seen an aquaponics zealot do the math on the cost per unit of fish food versus the cost per unit of fertilizer. Intuitively, complexity and costs could be reduced greatly by removing the fish component, i.e. hydroponics.