'Big Mouth' grown outside. It had several healthy traps, but recently this brown/black whatever it is has taken over the plant, and rapidly at that. I've cut off several traps and leaves, and yet it spreads. Just a couple weeks ago this was a very healthy plant. 1 part sand, 1 part peat, fresh re-potted in Jan. I place it in 1/2" water, let that water dry up and then refill to 1/2" again. I'm guessing it's some kind of fungal attack, but I haven't seen this before so I'm not sure. My other vft's are fine. So, some help here please..