For a few years now I have been losing neps quite regulary where the roots on examining are very wirey black and dead. And often the dieback extends into the base of the plant. Healthy nep roots I find are black, thicker with micro hairs on them and white caps to the ends.
I keep losing plants to this mainly during the summer.
A recent victim is my eddy
Here is a photo taken a few days ago. Although it looks quite good I can see some bad signs (I am becoming an expert in noticing them nowadays!). There is wrinkles on some leaves, the newer pitcher lid closed soon after opening and the overall growth stopped about a month or so back. I unpotted it today and sure enough the roots are intact but dead and there is some rot in the lower section of the thin and short stem.I have removed all this and now bagged it up in fresh compost. But am not hopeful long term. Actually this is the fourth time I have repotted this poor plant since getting it and the second of turning it into a cutting. Since the last time cut up in april 2013 it has finally put some better growth. But its back to square one.
I use either live or dry sphagnum moss with either orchid bark or clay pellets in the mix and have been using this type of mix for about 24 years now!
Until about 2012 I have fairly few losses and most were early in the life of the plant. But these deaths have increased in the last year or so. I use a mix of clean fresh rain water and RO water. And keep my plants in three greenhouses and tanks. But have losses from all areas. Mainly my oldest rarest plants of course!
I have tried Trichoderma over a fair few years with no sign of benefit for this issue. Any ideas- apart from giving up the hobby!
Currently its depressing and expensive.