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187

A unique aquaponics system to produce more fish and vegetables with less energy (phys.org)

submitted 4 weeks ago by [email protected] to c/[email protected]

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[–] [email protected] 15 points 4 weeks ago (5 children)

If I were building these, I would make several medium/small size systems, with different crops and fish. such that in event of a failure not all systems would break down.

[–] [email protected] 13 points 4 weeks ago

When dealing with fish, a bigger system with more water is usually more stable.

[–] [email protected] 6 points 4 weeks ago

I like this idea in concept. However in most cases failure is mostly due to power loss. So unless these seprate systems have different power sources it might not protect from catastrophy that much.

As some one who does aquaponics at home. Here are some things ive learned which you might consider.

There is a minimum physical footprint that these systems use, especially if you are trying to conserve power. So it might make more sense to max out those systems in that minimum footprint.
Different fish can have very different temperature and pH requirements.
The pH and temp that the fish like isn't always what a plant wants.
some fish have much greater ranges of pH and temp requirements than others.
if indoors, it's easy for a pest to establish. Like aphids will trive without ladybugs or green lacewings.
Vegetables grown in aquaponic systems simply do not taste as good as vegetables grown in soil. Often they are lacking flavor.
something about the water in an aquaponic system is excellent for propagation from plant cuttings.

For these reasons, I use aquaponics more as a backup and complimentary grow system to my no till regenative garden. Having an indoor system is great in the winter if you want leafy greens or to proprpgate trees for the next season.

[–] [email protected] 4 points 4 weeks ago

Decentralized agriculture

[–] [email protected] 3 points 4 weeks ago (1 children)

I would make it big and use just one crop and one kind of fish, and then crossbreed the crop with the fish so they share genes but have better yield and can be eliminated by a single virus popping up and killing it all

[–] [email protected] 3 points 4 weeks ago

We gotta make that virus, too. Just in case the fish-plant hybrids rebel.

[–] [email protected] 3 points 3 weeks ago (1 children)

I have to say, I'm always skeptical of proposals that seem too active.

Agriculture is mostly passive. Of course plants need care, but most of the time, they're doing their thing alone. If you need constant monitoring, maintenance, resource cycling, etc, etc, it'll drive costs up very quickly and will need to be detached from nature quite a bit.

This is, at best, a niche solution for rich countries. It won't feed the masses.

[–] [email protected] 1 points 3 weeks ago

Our local high school cafeteria program has been running a sophisticated version of this without the biogas element for years. Fish in very large tanks feed the leafy greens hydroponics growing in ranks of pipes on the walls, it's very productive. Greens get used in the popular cafeteria (open to the public) and also the salad food truck they run in the summer months. Fish used are tilapia. Power is solar.

The students studying food services get a lesson in energy systems and food sourcing as well as running a business. Superb food, too. All mostly due to one chef-teacher with vision.