A little hesitant to answer as I am not familiar with what you might have available in Ireland. My only real link to Ireland is my blood and having flown over the country several times going a fast we could go. I think you might have a few things common to places I have grown Cymbidiums (I have around 2000). The first similarity is wet weather and humidity - this leaves out dirts and Pro mixes in my opinion. I would use either Fir Bark and Pearlite or Coconut chips and very fine porus gravel. You need to make a mix that drains well but retains moisture. Mixes which retain to much moisture will lead to fungus infections and rot in moist climates. Removing roots especially the dead ones is a must and some shortening of living roots is also a good idea. I would clean the roots of all old potting mix and wash well followed by a good soak in a fungicide. Letting the roots dry for a few days is good idea especially plants which exhibit rot or fungus infection of roots. A lot of plants are sold as "Pot Plants" or throw away plants. The potting media for this type of plant is not intended to last long and most plants should be repotted right after flowering if you intend to keep them
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