I use about 150 grams of Charge for 50L of soil(BB Lightmix). That is a light feed as i germinate inside pots. And i also usually top dress a tbsp or two at about week 4 but no more after that. The microbe tea i do the first watering at 1g/L and then weekly at 0.5g/L through veg and in bloom i use the PK tea from BioTabs.