Warning!!!!
POTTING SOIL WILL NOT WORK!!!!!!!!
You have no animals yet, which is good but a few things...
1) if you do have animals you want NO FERTS in the soil (neutral/clean dirt, NOT potting soil)
2) potting soil is WAY too water retentive for these setups
I would highly recommend getting a mix of COCO COIR (coco dirt, pure clean) and COCO HUSK / ORCHID BARK (retains moisture and adds drainage) as well as some charcoal (NATURAL WOOD, FINELY ground) or hydroton/crushed clay to both increase the drainage as well as up a tiny bit of calcium content into the soil.
Again you want NO FERTILIZERS in the tank if you have animals. And potting soil retains too much moisture for how often we have to mist to keep up humidity so you will end up drowning your plants without upping the drainage. It seems fine right now because you are not misting very much....
....but if you were to have more draining soil and mist more often, you would likely get better plant growth.
Also, since its 2 months and you have no animals (no poop = no natural ferts)...how are you fertilizing it?
Just some tips
