Bacteria-Savio Made from stabilized extract of barley straw. More effective and easier to use than barley straw bales. Performs better than messy, decomposing barley straw with better results in a wide range of temperatures and pH levels. Fish and plant safe. Initial dose 8oz/1000 gal – Maintenance dose 4oz/3000 gal. GREENEX 8.8-oz SAVIO: GREENEX 8.8-oz $29.25 SKU: SAV470 Click here to save 5% off of your order! GREENEX 2.2-LB SAVIO: GREENEX 2.2-LB $69.25 SKU: SAV471 Click here to save 5% off of your order! BENEFICIAL BACTERIA 12-oz POWDER SAVIO: BENEFICIAL BACTERIA 12-oz POWDER $13.50 SKU: SAV440 Click here to save 5% off of your order! BENEFICIAL BACTERIA 16-oz LIQUID SAVIO: BENEFICIAL BACTERIA 16-oz LIQUID $8.50 SKU: SAV441 Click here to save 5% off of your order! BENEFICIAL BACTERIA 32-oz LIQUID SAVIO: BENEFICIAL BACTERIA 32-oz LIQUID $12.75 SKU: SAV442 Click here to save 5% off of your order!