H2O2 kills it....you could try treating it with 15-30 ml H2O2 per gallon. If you use organic nutes it will kill the good bugs too so you could dip the roots in a separate container for a bit and return them to the rez.
Cyclonite Reviewed by Cyclonite on . Latewood...help needed Latewood, what could cause instant death to a plant other than over fert. I did everything as I always would with my DWC water change. Fully flushed with RO water. Added nutes, micro first waited 5 min, then bloom,(was using lucas), then sensizym, then calmag, then LK. I addded them at 5M 10B ,10Sensi, 5Calmag, 5LK. per gallon (values are ml). PPm's were at 960, ph 5.8 (checked with two just calibrated meters). I have noticed a bit of black build up on the root base, but I thought it was Rating: 5