Green Planet PK Spike (1L / 5L)

PK Spike is formulated to provide a uniform quantity of phosphorus and potassium to your flowering plants. Designed with over 25% more P/K than the next industry leading brand, this product can be applied at a maximum rate of 1mL/L to achieve a 250ppm P/K spike to your plants.

Use: Begin use in week 2 of flowering cycle.