[Drlovekek]

Originally Posted by mojave green

yes, and oxygen also kills anaerobic bacteria that cause root disease. similar to allowing a kitchen sponge to dry out before reuse.

Ok thanks! I'm on it, here u have some photos and info from today.
Temps between 17º - 24º
Humidity between 35%-60%
Watered with GH Flora trio at:
1,2ml Grow
0,6ml Micro
0,6ml Bloom
All per liter.

[Drlovekek]

And yes, it seems like root rot to me. :/