["Feature:\r\nThis product can effectively remove fish waste, removal of nitrates, phosphates, red moss, etc., to improve water pollution. .\r\nThis product is particularly suitable for use to open a new for tank.\r\nIt help the for tank quickly produce beneficial bacteria.\r\nNew for tank every 100L water use 2 piece. NOT use too much, and suggest after it putted, turn on the air pump\r\nAnd every 7-10 days, use 1 piece per 100L water\r\n\r\nSpecifications:\r\nMaterial: Drug\r\nColor: As the picture shown\r\nBottle size: app.4.5cmx8cm(1.77inx3.15in)\r\nQuantity: 10pcs with no bottle\r\n 20pcs with no bottle\r\n 50pcs/Bottle\r\nNotice:\r\n1.Please allow 1-3cm error due to manual measurement.Pls make sure you do not mind before you bid.\r\n2.The color may have different as the difference display,pls understand.\r\nPackage Included:\r\n10pcs with no bottle\r\n20pcs with no bottle\r\n50pcs/Bottle Nitrifying Bacteria (without retail package)"]