Check the listing for details. Microbe-Lift KH Bio-Active Booster 8 lbs. Condition: New. Listed at 45.60 USD. Microbe-Lift KH Bio-Active Booster 8 lbs. Essential for Nitrification When pond carbonate levels fall below the necessary level, nitrification will stop and will fail to start again. With the loss of KH (carbonate alkalinity) pH levels will vary and pH will be difficult to control as KH stabilizes pond pH. USE FOR:Tap WaterTank WaterChange Water 8 lbs - approx 196 scoops Treats (up to) 9,600 gallons Application RatesA full flat level scoop (enclosed) will raise the KH by approximately:80/ppm in 30 gallons50/ppm in 50 gallons25/ppm in 100 gallons Webb's eBay Store Store Home Store Policies Feedback Shipping Most orders are shipped from our warehouse in Maryland. We warehouse over 95% of the items that we offer, which is a key to our quick order turn-around. Some orders are drop shipped directly from our manufacturer's in various states within the continental US. All orders are shipped via either UPS or FedEx therefore we cannot deliver to PO boxes, please supply a physical address to which we can ship your order. Payment We accept PayPal and the following credit cards: Visa, MasterCard, American Express, and Discover. Please feel free to contact us with any questions.