Check the listing for details. Microbe-Lift KH Alkalinity Bio-Active Booster. Condition: New. Listed at 29.99 USD. Microbe-Lift® KH Alkalinity Bio-Active Booster provides the essential alkalinity for nitrification. When pond carbonate levels fall below the necessary level, nitrification will stop and will fail to start again. KH levels must be maintained between 50-100ppm. With insufficient KH levels, pH levels will also vary and be difficult to control.Provides the KH (carbonate alkalinity) necessary for ammonia removal (7.1mg of KH needed for each mg of ammonia removed)Contains carbonate hardness constituents and bacterial culturesUse for tap water, tank water or when changing waterKeep out of reach of children and avoid inhaling or getting in eyes Application A full flat level scoop (enclosed) will raise the KH by approximately:25ppm in 100 gallons50ppm in 50 gallons80ppm in 30 gallonsEach pound of Bio-Active Booster countains approximately 27 scoops. Each pound raises KH by approximately: 25ppm in 2,667 gallons50ppm in 1,333 gallons80ppm in 800 gallons​Microbe Lift MicrobeLift CABPSM CABPMD CABPLG EML268 EML269 MLCABPSM MLCABPMD MLCABPLG