The biggest question for me is how much nutrient is there in the coir-rice mixture? Would any fertilizer leach through with watering? Coir-rice hulls would be good to add to soil to insure it is lighter and drains. Can you compost the coir and rice hulls and add the compost to a good soil at 1:1? I believe that would be better. I mix oak leaf compost (slightly acidic) with loamy river sand. This insures good drainage but holds moisture. Yesterday I cut a "limb" of port-a-dora to give to a friend to root. It was almost 3 meters tall with huge leaves. If I can do that in a temperate zone and store it in a cool greenhouse, you should do as well or better in the tropics. Transplant any time in the tropics.

Phil , can you plant it out in the ground somewhere ?
They do really well planted out in the tropics .
My neighbor has several large clumps growing under trees and they look fantastic , even after a hard winter . If you must keep potted , now is a good time for us down under . I use added pinebark and scoria , and always pick off the many small offset tubers to spread around.

Hi
I grow all my alos and colos in a mix of 5 parts pine bark fines 2 Canadian peat 1 of perlite. I'm assuming the pots will be outdoors??
If you can't get these materials try some other types of bark in a small particle size along with a bit of top soil
crushed granite or lava stone will act as perlite.
Only thing I've found them sensitive to is dryness and direct sunlight.
I fear the mix you mention would break down very rapidly.
You certainly should be able to use them as a yard plant in your area. If exposed to a lot of rain a simple mix of bark and stone should be more than enough for pot culture. gary

Thanks for the responses.Based on what has been said it sounds like these plants are tolerant of a range of soil mixes. I think I will use a light mix as during the wet season the rains can be heavy and are frequent.