Core Loop
Fish → Bacteria → Plants → Fish
Fish waste becomes plant food via nitrification (ammonia → nitrite → nitrate). Plants polish the water; biofilters and media house the bacteria that make it all work.
What is Aquaponics?
Fish, bacteria, and plants working in a clean, closed loop that saves water and grows exceptional food.
Fish • Bacteria • Plants Recirculating water No synthetic fertilizers Beginner‑friendly
Aquaponics combines aquaculture (raising fish) and hydroponics (growing plants without soil) in one natural cycle. Fish produce waste rich in ammonia. Beneficial bacteria convert that ammonia to nitrite and then to nitrate, which plants love. Plants absorb the nutrients and return clean, oxygenated water to the fish — creating a water‑saving, low‑waste loop.
Benefits
Use up to 90% less water
Recirculating systems drastically reduce water consumption and avoid synthetic fertilizers. Expect fast growth, clean produce, and excellent flavor.
Versatility
From classroom to commercial
Scale a system to fit your space and goals. Start on a balcony; expand to a greenhouse. Choose species that match your climate and market.
How It Works
- Fish tank: fish eat, produce ammonia‑based waste
- Mechanical filter: removes solids to keep water clear
- Biofilter: bacteria convert ammonia → nitrite → nitrate
- Grow beds/channels: raft (DWC), media beds, or NFT
- Pump + aeration: efficient circulation and oxygenation
- Lighting: sun or LED tuned for plant growth
What Can You Grow?
Lettuce, basil, mint, kale, Swiss chard, tomatoes, cucumbers, peppers, and microgreens thrive thanks to steady nutrients and oxygenated roots.
Popular Fish
Tilapia, trout, catfish, koi, and goldfish. Pick species for your temperature range, local rules, and whether you want food or ornamental fish.
System Styles
- Media beds: flexible and beginner‑friendly; excellent biofiltration
- DWC/raft: stable water temps and great for leafy greens
- NFT: efficient channels for herbs and compact spaces
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