L-cubed, it will be nice to hear how you do. Take lots of before, during, and after pics.
Would it be exposed to predators? I have mink & otters that would shred most materials quick to get to the buffet.
It could make good sense for a grow out pond for fry, in any case.
Would there be a continuous-flow water supply? Or are you thinking some kind of filter? There was a thread around here somewhere about bog filters for smallish container ponds.
