Jul 11, 2012 - i have had a few cheap backyard frame pools, and pretty much the 'filtration systems' they come with are only good for people that never get in . Jul 16, 2012 - After looking at some of the other suggestions I figured I could come up with my own version of a pool filter. and make it reusable. So I started . OLIVE is a natural swimming pool filter that uses bubbles to organically clean the water. Check out . OLIVE makes building and maintaining a natural/organic swimming pool easier than it has ever been before. Organic Pools DIY Manual. Is something wrong with your swimming pool filter? Are you having trouble keeping your water clean and your filter functioning properly? Do you hear strange . 17 Natural Swimming Pools You Wish Were In Your Backyard This natural pool blurs the line between pool and filtration plants in a very easy and inviting way!