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Comment by rhaps0dy

9 years ago

This is so cool! I learned about tilapia when looking into closed-loop hydroponics; apparently they are good at growing in tanks, growing fast, and fertilising the water.

(if you look it up in youtube though you will get tilapia harvesting videos, which are not the nicest)

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rhaps0dy

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markdown  9 years ago

> closed-loop hydroponics

Aquaponics?

  • rhaps0dy  9 years ago

    I guess; I didn't realise there was a difference in the terms.

    • markdown  9 years ago

      Hydroponics and aquaponics are both considered closed-loop (compared to other agricultural methods). Hydroponics involves growing plants.

      If you're raising fish in addition to crops in your system, with the fish excrement providing the nutrients the crops need, then you're engaged in aquaponics.

donquichotte  9 years ago

It's not really closed-loop though, is it? You still need to buy food to feed the fish (and maybe fish food, which will end up in your vegetables, can be contaminated, e.g. with heavy metals?)

Or am I missing something?