My preformed pond has a large hole in the corner of it and I found the patch material and I got some expanding foam to put on the backside of it but as I looked at the hole I wonder if i'll be wasting my time if it's a hole that large can be patched if any of you more experienced people with preformed ponds could give me an honest opinion I'd really appreciate itbuying another pond is out of the question so it's just a matter of fixing this one or going ahead and giving it up
Second photo is of the inside of the pond