| I would not expect any sudden changes - unless bacterial rot or pests are involved, most of the issues that affect our orchids in a negative way culturally do so very gradually over weeks, months, even years of slow decline - depending upon the specifics. If you have read any of my other posts you will note that I am a fan of coir mixes - be they home made or something like Aussie Gold - they do a much better job retaining moisture for plants that require it. If you find a fine fir/perlite mix be sure and soak for 24-48 hours before using and then you many also need to soak when watering for awhile - until the media gets into a mode of retaining the moisture your plant requires. My guess is that the phal mix that you have noted would work as well though I have no experience in a mixture made up of those components? Many different options are obviously available and it is our challenge to find what works for each of our cultural and environmental conditions. Good luck - mike |