Quote:
Originally Posted by Lexi11990
It is in bark! I will check it out in a bit. Thank you so much for your reply 
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The media changing time for that soft bark they sell in big box stores is only a bout a year. Maybe 2 for a harder bark. Despite all the repotting videos, orchids hate to be repotted. It puts them under a great deal of stress. It is like falling off your tree, or being dug up, and then situated in a new home where everything is different.
I prefer lecca, small (Hawaiian) black lava, or pumice (the large chunks), or a mixture of those. In some cases I use orchiata which is a harder bark from New Zealand-- but it is still a potentially decaying part of a tree, it just take longer to decay.
The build up of mineral salts is still an issue on every type of media. The pots should be flushed with pure water (rain storms are good for this). a few times per year.