I have accumulated an extensive amount of plants in my emerged setup over the years. As some of you may already know from APC, most of these plants are cryptocoryne. But recently, I've developed an interest in rare anubias and bucephalandra sp. as well.
My setup is not ascetically pleasing but it is functional. There are currently four containers, all plumbed together into one sump for easy dosing and water change.
Another reason why I had the setup the way it is is because I am also a real sucker when it comes to fungus strikes. So, whey they hit, all I need to do is change the pvc pipe to elevate the water level to skim them out into the sump. Or, I could do the same when I want to grow something completely submerged.
Here is the 55g - mostly crypts:
30g - mostly anubias:
2 X 18g rubber maid tubs:
I will take some individual pictures when I repot some plants this weekend.
I don't check the humidity level but it looks like it is always on the low 90/high 80's.
For any fungus or this black slime algae (not sure what this is) issues, I raise the water level by swapping out the pvc pipe when either one of these gets out of control. The slime algae and fungus will float and skimmed to the sump. I'll take a pic of this later. I also have pond snails in there that will eat the algae and give back nutrients to the plants at the same time.