8 Filter 20-layer filter with zero restore directed treatment process, the removal of toxic and hazardous substances to visit the plant roots absorbing water treatment technology to absorb the human body needs calcium, magnesium and potassium mobility and other substances and zinc copper, iron and other trace elements,ultrafiltration antibacterial anti-virus put an end to pollution, especially suitable to deal with high calcium and high fluoride bitter alkaline heavy metal water pollution in mountain spring water, well water, lake water, seawater