[quote=Ray B;769943]Jane,
Take a look at these articles:
http://www.firstrays.com/flushing.htm
http://www.firstrays.com/mineral_buildup.htm
QUOTE]
I just want to add here that it is only necessary to repot your Phalaenopsis when the soil shows signs of deterioration.
You may also find this article useful:
http://www.landscape-and-garden.com/...is-orchid.aspx