Aquaponics
Hmm a fish farm, so, dig a huge hole! I don't know...
It’s better not to dig a hole but get a giant tank and insulate it from the ground with 3” styrofoam.
You could do it using IBC liquid pallet containers. These can usually be picked up reasonably cheaply. You can cut them down to make fish tanks and wicking beds to grow veges in as a part of the aquaponic system.
(post is archived)