Hi I was wondering what plants can be used. I have tried Stromanthe but has only lasted a few months not sure what went wrong I have a jewel aquarium which comes with an built in filter so I strip it out and placed the plant into the filter box.
Pothos, (But not in a pot), Spathiphyllum, and a large number of semi aquatics - including several aroids, many ferns, irises, rushes, reeds, some grasses, and so forth - all depending on how much light there is.
I also use Epiprenum (pothos) in most tanks, only parts of the stem and roots can be submerged, most stem and leaves should be above the water line otherwise they will rot. The roots provide great plces for fish to feel comfortable, but also tend to accumulate detritus, but most plants do that anyway.
If you float a branch, or log, the roots will eventually work their way in.
I also like to use bog plants such as papyrus where there is enough space and light, but be warned it grows very tall.
Been using Mexican milkweed (Asclepas curassavica) in my out door ponds, and am going to try it inside after this coming summer, it has a beautiful flower.