Product 15/19
With no nitrogen it is used in rockwool and hydroponic systems, and by exhibition growers to produce firm growth at the end of the season. Rate of use 1oz per 4 gallons of water. Phosphorus Pentoxide (P2O5) 52% (P 22.7%) Soluble in water Potassium Oxide (K2O) 34% (k28.2%)
