Problem with grow

Your feed level is high, but there is a possibility that this is more then that. I had leaves like this on stuff that had hplvd. I can't say for sure till it starts forming colas. I would do this plant last and don't touch the healthy one after you handle this one. Maintain a sterile, and clean area and tools. Hplvd has a 10 percent chance of coming in a seed if the breeding plant was infected. Breeders have no stipulations on what they can use to my knowledge. Of course this could be the excess feed, but better safe then sorry. Alcohol is ineffective on hplvd. A bleach water mix takes over a hour of exposure to kill hplvd. I would monitor everything as usual. It could be the heavy feed, and it dropped your ph too low in substrate. Limited information makes it hard to diagnose.

It looks like over feeding, too much nitrogen & possibly too much calmag .