Help with my medusa

[Lynn in Michigan]

HI all. I have tried a couple of Bulbos with no luck. Last year I got a Medusa and it is growing for me. It is in a basket with spag. in it. The spag. looks like it is really breaking down. I know that they hate their roots being disturbed, so what do I do? Just put new spag on old, or try to pull out the old and add new? I can't just drop it into another basket because I have several bulbs growing under the basket. thank you.