Hi David!
I’ve germinated two mango seeds following your video and I was so happy that even here in the east spanish coast, with an autumn mediterranean weather, it worked!!!

Since temperatures are dropping low, I brought one of the saplings indoors home, and the other one indoors in my workplace office, which is always around 20ºC and walls are almost all crystal, letting natural light go in around 10-12 hours a day.

The one home is fine, and so was the one in the office for the month the sprout started growing out of the soil, although, it started growing dark spots in the lamina of its leaves, in between its veins.

May you guide me a bit? We have become very attached to the plant, we even sing to it, hahaha! We wouldn’t like to lose it.
I’ve read it might be a fungal infection, maybe atracnosis. I’ve reduced watering, but I’m not sure what to do with the infection.
Is there a way to heal the baby?

I uploaded a couple of pics here:
https://imgur.com/WGC0oGN
https://imgur.com/fABWtV3

Thanks a lot, mate!
I love your videos!!!

Best regards,
Jhon