I like the nepenthe, grow is vey slow so maybe it needs more humidity? I have two new leaves that start making pitchers.
In my opinion this set up would be better outside or best in a greenhouse. The outside wouldn't work in Chicago Land and I don't have a greenhouse.
There are dozens of ways to do this outside. Spend some time on youtube. I saw one nice pond with raised grow beds from Austraila that was really done well and rather inexpensive.
you can actually do it outside, as long as you keep your tanks heated. I saw a video on youtube, everything was covered in snow, but he still had growth.