Metrop MR2 is a high concentrated liquid Flower fertilizer. Maximum use is 100ml/100 litre water. That means you dont have to carry large bottles of fertilizers anymore. In the MR2 Flower fertilizer, the NPK and micro-elements balance is specially composed to produce the highest possible yield from the plant. Because The more potassium to a flower, the fatter the flower! That is the basic rule, but for the maximum volume increase, you need twice the potassium than phosphorus!! That is why MR2 is a flower fertilizer and PK booster in one. Also the MR2 assures the availability of magnesium for optimal chlorophyll and protein synthesis.