Mag-Pro is a unique supplement that can be used with any complete nutrition formula as a blossom booster to help initiate flowering. Growers using reverse osmosis, rain or deionized water will benefit from the addition of Mag-Pro to their watering schedule. Mag-Pro is a nutritional supplement and should always be used with a Dyna-Gro complete nutrition formula. Dyna-Gro is more than a fertilizer. Dyna-Gro is a complete nutrient solution "The Nutrition Solution". Ordinary fertilizers are incomplete. Many only contain N-P-K! Some contain additional elements but are still not complete. Only Dyna-Gro Nutrition Solutions contain all 16 of the minerals essential for optimum plant growth in one, easy to use, liquid concentrate. Omission of any one of these minerals will result in either abnormal growth, the failure to complete all life cycle functions or premature death. With Dyna-Gro, simply dilute the appropriate formula to the desired concentration with the assurance that all macro and micro nutrients are present in the proper ratios.