For nothern hemisphere biotope aqaurium, you would need a Cooler instead of a heater. And yes people have tried occasionaly there are a few topic about it.. If i remeber correctly even George our forum founder once did an English biotope tank.
But without a cooler it never is a long term succes.. It simply gets to warm in the tank setting this up indoors in small aqaurium volumes Indigenous plants from our region are mostly anual plants, some can be grown as evergreen in higher artificial light conditions..But all Indigenous fish need that cool winter periode and overall cool water, if it gets to warm to long than don't live past a year.. The only one able to coop with this is the Carp, officialy not indigenous, but an ancient exotic from asia. Romans are to blaim introducing the carp into Europe..