Cattleya with White Bugs on Roots

[zaza]

Hi everybody,

I've just joined the forum because I'm worried about my Cattleya orchid. I've had it for three weeks, keep it indoors and have gotten 3 blooms since it arrived. I'm new to the orchid world and am worried about two things that might be symptomatic of the same problem (or just paranoia):

1) There are tiny white bugs running on the edge of the pot and media. There are also small white flecks on the roots. Are these bugs living in the roots? The bugs only come out when I water the plants. I've checked the rest of the plant (stem, leaves, flowers) for bugs and can't find any.

2) There are reddish brown spots on the spike and leaf of flowering stem and none on the rest of the plant. Could this be related to the root problem?

If I need to treat my orchid with a pesticide, are there any natural (home/organic) pesticides to use? How do I go about applying it.

Also, which fertilizer would you recommend? I'm trying to be as organic as possible. Any other tips for a new comer?

Thanks in advance,

zaza