Top Substra is a partly coated NPK complex fertilizer with emphasis on phosphorus and potassium designed for substrate mixes. It is suitable for the application in potting soils and peat-based products.
The nutrients are released in two steps:
1) Starter effect after application under moisture influence. As a result, the relatively high immediate demand is met.
2) In a second step, the coated granules release the nutrients via diffusion influenced by moisture and temperature.
Mixing into substrate is recommended directly before use (maximum storage time: 10 days).