Harness the full genetic potential of your valuable crops with Cali pro grow a & B & Cali pro bloom a & B -Emerald Harvest easy-to-use 2-Part base nutrient series. Benefits use Cali pro professional 2-Part nutrient series to: establish an easy yet Complete feeding program for your plants get professional results for novice & expert growers alike feed simply-just measure & pour in equal portions product description reach the full genetic potential of your crops with Emerald Harvest Cali pro grow a & B & Cali pro bloom a & B, our Complete 2-Part base nutrient series. Cali pro is engineered to fuel your garden throughout the crop life cycle & encourage vigorous productivity from rooting all the way to harvest. Cali pro is a nitrogen-rich fertilizer that nourishes your high-yield, indoor-grown crops with the essential elements they need to develop strong stalks & stems & support a robust harvest. Rich in phosphorus, potassium & other essential plant nutrients needed for vigorous fruiting & flowering, Cali pro also contains trace elements such as chelated iron, cobalt, manganese & zinc. See the guaranteed Analysis for more information about our quality ingredients. With Cali Pro’s simple feeding program-just measure & pour the a & B parts in equal portions-emerald harvest helps experts & novice growers alike achieve harvests anyone would be proud of. Use Cali pro grow a & B during the vegetative stage & Cali pro bloom a & B during flowering. See our feeding chart for simple mixing instructions & application rates.