Ok, this spring I will finally dig the forage pond. It will have a square shape with rounded corners and in section it will be like the pic (the measurements are in feet). A liner will be placed to cover the deepest part and the slopes up to the step. The step will be more than 3 feet wide and covered with crushed stone and the water, at that point, will never be deeper than 2' thanks to an overflow pipe. I hope this makes the pond safe for my younger children (3 years old) and their friends too. They will never be left alone, of course, but it is always better to be as careful as possible.
As fish I will put PS and Rudd (a fish very similar to your GS) and, maybe, 1 LMB as bonus fish, to always have forage fish available for the other pond and to start making my twins fish.
I'm no more so convinced about lilipads, maybe I'll put some potted on the step, just to give some vegetation for the fry.
What do you think?
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