I put in a pond back in nov.Its 13x9x3ft deep.Everything has been fine up to the other day.We had 7inches of rain in 2 days and part of the sides caved in.I live in sw florida.What could I do to reinforce the sides of the pond so this wont happen again.Not sure how to go about fixing the problem.I will add a few pics of what the pond looks like before.