Well rot can come from temp, light leaking, poor aeration. Was it the tap root or? If it was the tap root that might might not be goodBad news fellas...Looks like my stunted growth was due to root rot... The main root looked shorter today so I thought I'd see how it felt and it basically dissolved in my hands. Hydroguard is on the way. The new roots look fine but the main/original root is totally rotted. I hope it can recover. Must have been the light exposure in the res.