Plant Magic PK 13/14Plant Magic PK 13 14 Plant Magic PK 13 14 contains the correct ratio of extra phosphorous and potassium for prolific flowering when used as an additive with Plant Magics mineral feeds. Helps produce large and tasty yields without the risk of shock. Potent PK Booster with a 13 14 Ratio Plant Magic's PK 13 14 offers the ideal ratio of phosphorus and potassium to enhance prolific flowering when used alongside Plant Magics mineral feeds. These highly