I have a client who I built a 3/4 acre swim pond for 5 years ago, call and ask if he could make it a salt water pond just like the saltwater pools. Never had that question before. The whole pond is lined and filtered with bog filtration, even though the filter is way undersized its prety clear and the water is checked monthly by the city. I know the plants would die in the bog, im not sure if it would hurt the liner or how hard it would be on the pumps. Any thoughts or suggestions would help. If it is possible im sure there arnt to many especially this size. Ill post some pics of the swim pond.