Check the listing for details. ECLAB Microbe-Lift KH Bio Active Booster 2lb. Condition: New. Listed at 29.48 USD. ECLAB Microbe-Lift KH Bio Active Booster 2lb Essential for Nitrification. Use for: Tap Water, Tank Water, and Change Water. 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. The natural biological ammonia removal process in ponds referred to as nitrification and: Requires the presence of KH (carbonate alkalinity) at all times. Utilizes 7.1 mg. of KH for every 1 mg. of ammonia removed. Continuously depletes KH so KH must be monitored and restored as necessary with MICROBE-LIFT/KH Bio-Active Booster. Maintain 50-100 ppm KH at all times to assure nitrification. Features Details Fast and Free Shipping You're already purchasing the item. Why pay additional for shipping, especially slow shipping? We get your order shipped out within 1-business day and delivered to your doorstep as quickly as possible. Competitive Pricing With our dynamic pricing model, our prices are always competitive. Our prices are some of the lowest that you will find on the internet. Rest assured that you're getting a good deal when purchasing with us. 30-day Money Back Guarantee We are committed to making sure that you leave this transaction satisfied. If you're unhappy with the product for any reason, you may return it back for your money-back or a replacement within 30 days. No questions asked!