I once had this filter - then bought at Praktiker. Unfortunately, this was stored in my shed, which burned down last fall ... The filter is quickly assembled and connected. I have a 3.66 m diameter quickup pool and always crystal clear water. I would recommend to anyone, instead of filter sand with glass crystals. This will cost a bit more (about 35.0 to 25, - KG) - but definitely worth it! Glass verklummt not, can be used for years, and also filters out bacteria etc. better than sand!