$ 12.95 each
For the prevention of string algae.
Although manufacturer claims each bale treats up to 1000 gallons we recommend 1 bale per 700 gallons. The barley emits an enzyme that helps prevent the growth of string algae. 2 to a Pack. Easy to place tubular-shaped bales.
2 pack. Each bale measures approximately 9" L x 6" D.