Barley Straw Pellets are 100% natural & organic ingredients specially formulated to naturally balance pond water & improve water clarity. Enriched with peat and humic acid, this revolutionary formula works faster & better with less mess & cost and is easier to apply than bales, pillows and pads! The humic acid will also chelate metals such as copper or arsenic. NOTE: Fish will not eat the barley pellets as they contain no food value.