I have a small 16x48 ultra frame pool. When I am vacuuming, small debris shoots right back into the pool through the return hose on the side of the pool. I have made sure the filter cartridge is clean and even put in a new one. I ended up attaching the cloth bag they provide for the top of the vacuum to use if you are cleaning using the water hose attached. I put the cloth baggie over the return spout and it catches the debris. I have to stop half way through to clean the bag because it gets lined with teeny tiny debris and it doesn't allow water to flow. I thought to perhaps use a knee high stocking in hopes that it's more porous than the cloth, but I haven't tried it yet. This isn't the end of the world and the baggie works well, it just seems like I am working harder than I should have to! lol I have looked for similar issues but there aren't any that pertain to my situation....a lot of people talk about 'filter gauges' but my cheap little pool doesn't have that.....Any thoughts?