I have a small pond 6ft long 4 foot wide 14 inches deep above ground. I thought it was 18 but turns out to b 14 inches. I wraped plastic then insulation then plastic again. Moved it to the back of the house where its warmer. I have goldfish in it. If i keep my pump running and water movement so my water doesn’t freeze will my babies survive the winter? We live in mid missouri with sometimes we have harsh below freezi g for several days but almost very mild winters. Help i don’t know what to do