Rice husk charcoal can collect moisture and good drainage, but good as # 3, because coal has a high pH value of horse best is 9, which is not suitable for the growth of the branches lime.
Husk charcoal can retain moisture and good drainage. But the third is a good result because the husk charcoal high pH 9, which is not suitable for the growth of the branches of the lemon.
Rice husk charcoal can keep moisture and drainage well but gave a good number 3 because rice husk charcoal was the highest pH is 9 unsuitable for growth of branches of lemon.