Really hard to say whether it will leak again. It kinda depends on just how good the fix is. If the leak reoccurs, you might want to cover the bentonite with some firmly packed clay. It is also possible to find a sand seam in the sides. This can be nail biter time.
Even if you do have the holes repaired, you can expect the water level to vary some as it wicks back into the very dry banks. The dry banks act like a sponge for awhile. Don't get too excited about that.
Nice looking web site. How big will the water hole be at full pool?
It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.
Without a sense of urgency, Nothing ever gets done.
Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP