Use our product QTS Blueberry Premium if the aeration for the roots of your plants plays a major role. It has a larger content of sod peat and is coarser than our standard product to increase the air capacity. You also can use it for other berries or pot plants for pots > 13cm. Also suitable as a component to mix it with your soil to improve the aeration. The pH and EC can be adjusted according to your special needs.