Microbe-Lift Professional Blend Liquid 32oz + Microbe-Lift Concentrated Barley Straw Liquid Gallon Combo Pack Microbe Lift Professional Blend Liquid - Quart 32oz 10PBLXQ Microbe Lift Concentrated Barley Straw Extract - Gallon 128oz MLCBSEG4 Microbe Lift PBL Pro Blend Liquid: Keeps pond clean & clear, for fish supports healthy immune system Microbe Lift Concentrated Barley Straw Extract - 100% Natural & Organic Ingredients Specially Formulated To Naturally Balance Pond Water & Improve Water Clarity This combo stops keeps your pond clean and clear, helps support healthy immune system for fish, and improves water clarity