S/H Update and More S/H Questions

[Bmorepaph]

Hey guys! Well I am having pretty good luck with S/H culture. I have a very large majority of my Paphs in it and as you can see I have some new growth, a spike or two and a couple of flowers. I still have some questions if anybody would care to help me out: I grow in fairly high humidity situations. I have had some minor problems with some brown rot but nothing major. This may sound odd but do roots look different in S/H culture? I have several paphs that seem to be doing great;even sending up spikes but I have to be honest the roots don't look as healthy as I would like them to. I only water when the resevoir is depleted, but still feel like the roots are just sitting in too much moisture. I have some Physan and was wondering how I should go about using it becasue I have noticed some fuzzy white mold on some of the roots. Funny thing is again the plants seem to be doing great! Obviously the mold is making me a little nervous. Hope you enjoy the pictures: The closeups are of a Paph. Fowlei sending up a spike and a Paph. Pinnochio about to open a bud. The third is one of my two grow tables!