Whatever consultants in stores tell you, hydrogen peroxide 37% will make the water transparent, you just need to collect the sediment at the bottom. Has pros: Easy to assemble, but be sure to prepare the surface and align the supports exactly at 90 degrees Got cons: The pump included is not suitable for a vacuum cleaner, you need to buy a pump with a sand filter and a vacuum cleaner. But this is if the water is high in iron.