hey dr. joe; no filter no water conditioners. just new water that flows in to the pool 24/7 from my pond. which gets fed by the ponds on the golfcourse, which gets fed by a private lake, which gets fed by a public reservoir, which gets fed by rainwater, etc.
so basically the pool is going to get clean water free of ammonia/nitrites/nitrates eliminating the need for me to do water changes.