Aquaponics

A closed-loop system combining fish farming with hydroponic vegetable production - fish waste fertilizes plants; plants purify water for fish.

Sustainability: ★★★★★ Scale: Any Setup: $500+ FCR: 1.4

📖 Overview

Aquaponics integrates aquaculture with hydroponics in a symbiotic loop. Fish excrete ammonia into water; nitrifying bacteria convert it to nitrate; plants absorb nitrate through hydroponic roots; cleaned water returns to the fish tank. The result is two crops (fish + vegetables) from one water source, with 90%+ water savings versus soil agriculture.

🐟 Species Commonly Farmed

Tilapia (heat-tolerant, fast growth), catfish, koi, trout (cold systems). Paired with lettuce, herbs, tomatoes, cucumbers.

✅ Advantages

Extreme water efficiency. No fertilizer purchase. No chemical pesticides possible. Two revenue streams. Suitable for urban agriculture.