Here is what goes in my pots, the ratio keeps changing according to plants and my whim.
Top row ,left to right; Cow dung manure, Leaf compost, Rice husk charcoal,and Coco pith.
Lower row; River sand, Kairy (broken bricks) and Bhall.
For PH I add Ferous Sulphate and Sulpher, Chemical fertilisers are added after plantation on whims.
Please do not hesitate to ask any question that comes to your mind.
Arif