emperorsnakehead wrote:but i live in malaysia..
so it is a bit too hard to get that type of soil
Then use coir (coconut husk pith) mixed with perlite or sand or polystyrene foam bits or other inert, inorganic ingredients.
However, coir must be carefully desalinated before use. Coir should be soaked for 10-12 hours in distilled or rain water, then drained and soaked again, 10 times or more, until the TDS (total dissolved solids) in the drained water is consistently less than 50 ppm (parts per million).
So if one chooses to use coir, a cheap TDS meter is a good investment.
Best wishes and good luck.
Malaysia is relatively close to New Zealand. Is there no importation of the wonderful New Zealand sphagnum moss into Malaysia?