Hy-Gen PK Top Up is designed to boost Phosphorus (P), Potassium (K) and Trace elements levels during the flowering and fruiting stage. Potassium and phosphorous help improve flower and fruit colour as well as enhance the flavour of the final product. PK TOP UP™’s highly concentrated formula means you only need a small dose to achieve fantastic results.

After renewing the working solution, during the first few days plants absorb P,K and trace elements at a rapid rate. As levels fall, the growth rate begins to slow down.

Using PK Top Up regularly gives your plants a continued supply of valuable Phosphorus, Potassium and Trace elements when it's needed most.

Continue using NITRO-K™ until there are visible signs of flowers and buds then start using PK TOP UP™. This will ensure a continued supply of potassium for flowering while nitrogen is replaced by additional phosphorus needed for fruit production. Using the two products in succession will give improved colour, flavours and yields. The results will clearly be visible in the quality and yields of the final harvest.

WHEN TO USE: Use PK Top UP once flowers begin to form. PK Top Up is suitable for all "run to waste" and "re-circulating" systems.