Grower friends,we have a problem—the stem has started rotting at the base(soil line).It’s Fast Buds Banana Purple Punch Auto RF3,week 3.

cinnamon is a spice. It is not going to cure a fungal or bacterial infection, whatever the case may be. something that has 'anti-fungal' properties doesn't actually mean it is effective, and sadly that's most things when it comes to fungi. It's a hardy lifeform. Keep the stem dry as you can and good airflow. This is the risk of burying the stem to correct stretching. either you had bad luck or it stayed far too wet for far too long around the stem and it got an inevitable infection. The only thing you can do is to keep that portion of the trunk as dry as you can. Maybe, pull the medium away from it slightly, without exposing roots, of course. previously said top the medium off, but was unaware of microbial infection. Obviously, don't stack up moisture retaining medium against the infected trunk. still need to water properly or it'll just make matters worse. Maybe, allow a little extra dryback than normal, but don't let it wilt. Superficial roots are a sign of poor watering habits, adapt to previous instructions if you haven't.

hi it's not a good sign what you say it looks like (damping off) or a stem canker. By week 3, this is often due to excess stagnant humidity at the base of the plant. Crown rot ​The bottom of the stem has become brown, soft or shrunk. This happens when the soil remains soggy in direct contact with the trunk, preventing the circulation of sap. ​Risk: If the rot completely encircles the stem (girdling), the plant will die because nutrients will no longer be able to rise. ​ ​As it's an Auto, time is against you (it can't afford to stop growing). ​Dry immediately Gently scrape the surface of the moist potting soil around the stem. Do not put fresh soil on it, let the rotten part breathe in the open air. ​Antibacterial/fungal treatment: * ​Or use a mixture of 10% hydrogen peroxide and 90% water on a cotton swab to clean the area. ​Angle a small fan so that it blows air directly at ground level (not so loudly that it stresses the leaves, but enough to evaporate moisture from the crown). I hope things go well for you and your little plant. good luck

hi Aleks...... Ich denke das dein Klima generell etwas zu feucht ist.........bis zu 90% RLF bei Nacht ist eindeutig zu viel....... Giesse mal sparsamer und versuche die RLF zu reduzieren........ Das mit dem Ventilator ist schon mal eine gute Idee.👍 Falls ich dir noch irgendwie helfen kann, schreib mich einfach an....... Viel Glück