You can check out !hydroponics@slrpnk.net for more information about hydro in general if you're interested.

I've already explained this technique, but sadly only on !gruenerdaumen@feddit.org in German.
I've also found a schematic, but also in German.

It's a passive and very simple hydroponic system, where the pots stand 1/3 in nutrient solution, and it gets wicked up by expanded clay balls.

It provides absolutely ideal conditions for plants (extremely well aerated, perfect nutrients, etc.), but not for pests, and I only have to water once in about two weeks.

My "secret tip" is having them in semi-hydro (passive hydroponics with LECA).

The claim that they'll need 60+% RH is wrong in my experience, they "only" need the absolute perfect balance between having a substrate that's too wet (rotting risk) and too dry (wilting and burnt leaves).

Also, tap water is very bad for them, even here in Germany with extremely high standards (no chlorine or fluorine, etc.).

My nutrient solution is made with a full nutrient fertilizer and pure water (osmosis or rain), so there's no bad stuff (carbonates, etc.) in there. They react very badly to those things.

My collection is less than a year old, most of them not even a few months. They've been growing like weeds, even in winter!