Emerse setup : Terrarium or low water level ?

[guillaume-u]

Hello,

I would like to farm some difficult plants like Eriocaulon Rat and Quinquangulare (in order to be sure to keep them ; if something goes wrong in my tank).

But, after searching on forums + youtube, I don't know which is the best method. So I need your advice

• Create a terrarium : around 5cm of aquasoil and water just below the aquasoil level (like bucephalandra growing box).
• Use some holed buckets. Filled them with aquasoil and put them in a tank with ~5cm of water (like here : )

Which method is the safer (to avoid mold) ? If I choose the terrarium setup, should I add some springtails ? should I mist them ?

One more thing, this setup will be located in a fresh room (between 17°C and 20°C), should I add a heater ?

Thanks for your help