PRO PK is a pharmaceutical grade soluble liquid potash for heavy yields. When you initiate flowering there is a massive surge in the plant’s requirement for potassium. Lowered potassium levels will restrict the plants growth to match the available potassium reducing flowers and yield, whilst correct potassium levels will ensure an optimal flowering time and a higher yield.

Use: One week before commencement of flowering and first 3-4 weeks of flower.