So i just bought 10 liters of Plagron Supermix, i want to use it with Bat Guano as top dressing.
On the Supermix it suggest adding 0.5 liter pr. 10 liters of Soil / Coco, it seems too much to add as top dressing in my 10 liters of medium.
How much Supermix / Bat Guano would yo