Barley Straw is a natural alternative to treat cloudy and green water in your decorative garden and fish ponds. Each bale treats up to 1,000 gallons for six months and has a cork float. Clear netting holds the bale together. One package treats 2,000 gallons. Will not harm your fish or water plants. Availability: Usually ships the next business day. Barley Straw Water Clarifier for Ponds 018506$7.95 We guarantee satisfaction with everything we sell. Questions? Call us toll free at 877-898-6546. Mon. - Sat. 9-6, & Sun. 10-5 Mountain Time