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Concrete fish pond .. how to improve it

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Hi there, we have a large concrete fish pond and would like to convert it into a permaculture ecosystem. However i find it difficult because no soil available therefore can’t really grow plants. As a newbie I find myself stuck here. Could anyone help and provide some ideas..? Thank you all in advance..
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Location: Australia, New South Wales. Köppen: Cfa (Humid Subtropical), USDA: 10/11
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Aquaculture plants grow in varying levels of water. Some simply float whilst others are placed in pots to make harvesting easier. A raft type setup could also be used to mimic hydroponics. Some type of fish species would be useful to control insects, provide fertiliser and as another food source.

Bricks or stones can be used to raise plants according to their requirements.


Aquaculture Pool

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Location: Central Texas zone 8a
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What do you want from the pond?

Growing food? To thrive without inputs?

In either case doing the least amount possible.  Add some rocks for crevices on the bottom. Minimal fish and dont feed them. Whatever leaves fall in, let them stay. It will balance itself out.

That basically describes my cattle troughs. Minnows eat mosquito larvae and breed in the rocks. No feeding means no big algae blooms from over feeding.

That water can feed plants a bucket at a time. Once you move into aquaponics you are adding inputs like pumps, adding more fish than can sustain themselves, etc. I'm not sure what your final goal is. Permaculture + ecosystem doesnt equal pumps , aerators,  and fish food. Clarification of what you want would be good.
Alex Zhang
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Thank you Wayne for the reply.

The goal is to have produce from the pond: fish, vegetables etc. This concrete pond was originally built for commercial fish farming but now no fish and no plants around it .. there is water but seems lifeless.

Do you think we need to add soil to the bank of the pond? Maybe grow something first? However as there is no fish I guess the water doesn’t have any nutrients so plants won’t grow well too.

Interesting to learn mosquitoes larvae as free food for the fish. And it makes sense to add rocks for fish breeding.
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