Can a wood preservative be used on wood surrounding a fish pond?

Wood preservatives are harmful to aquatic systems such as fish ponds and will likely kill the fish if any is splashed or leaks in to the fish pond. If possible, the wood should be taken to a safe location away from the pond and treated. It should then be allowed to dry for the full manufacturers recommended drying time. We recommend treating the wood after preserving with a suitable exterior wood oil before relocating back to the pond areas. The oil will help to seal in the preservative and further protect the wood from the damp and moist environment.