I don't know the name of the plant. We can buy a similar (or maybe identical) grass here in Nairobi... but they call it bamboo, which it isn't...
I currently have four Polypterus delhezi (between 20cm and 30cm); there are also a few feeder guppies and a truckload of snails... I still hope to get Tetraodon schoutedeni (should take care of the snails...), Ctenopoma acutirostre (bye bye guppies...) and a pair of Hemichromis.
The tank's dimensions: 120cm x 80cm x 50cm (nominally 480 liters/125 gallon). Since there are no planters here (and would be too small for the Cyperus anyway), I partitioned a section along the back panel and filled it with local organic garden soil:
The Syngonium and Epipremnum just got tied to bits of wood that stick out of the water. I will still do that with a peace lily.
The rest of the tank just has a thin layer of river sand (between 0.5cm and 3cm). There are some Echinodorus, which thrive even though I just wedged them between rocks and wood; some Java ferns, Java moss and a single Anubias nana... it is so difficult getting plants here... There's also Salvinia and Pistia.
I used plenty of leaf litter (guava, mango and Indian almond) to get the water dark...
Finally, here a picture of two of the poly boys:
BTW, if I had a native American tank, I'd go straight for bowfins...