Microbe-Lift Concentrated Barley Straw Extract - 8 oz – Pet Life
Amazon.com: MICROBE-LIFT MLCBSEG4 Concentrated Barley Straw Extract Conditioner for Ponds and Outdoor Water Garden, Safe for Live Koi Fish, Plants, and Decorations, 1 Gallon : Patio, Lawn & Garden
Amazon.com: EasyPro BSE128 Liquid Barley Extract - Natural Formula Derived from Barley Straw Keeps Water Clean and Clear - Easier to Use Than Pellets or Bales - Safe for Use with Wildlife
Barley Straw Extract for Ponds - Webb's Water Gardens