Barley straw flakes pond treatment for 5 000 gallons lasts 3 months, Place in garden pond for clear water, May be placed in skimmers to conceal, Treats up to 5000 gallons of water, To conceal may be placed in skimmer, Barley straw flakes work 2 to 3 times faster than barley straw to clear your pond water, Smaller amounts do the same work of larger barley straw bales, Barley Straw Flakes, Dimensions (L x W x H):14 x 6, 1 x 1, 8 SKU: BCI16965