Doesn't look like rot to me. :thumbsup:

If anything, red hairs on the top cola that look shorter or more frazzled than the others might be an indicator that the light is a little too close to the top. That's happened to me before, especially when I was using an open "v-wing" hood, and was easily remedied by moving the plant away from the light just a bit.

Enjoy the harvest when the time comes. :jointsmile: