I planted it in a special filter I made, however when it grew big enough I completely submerged it and let it grow out of the top. It secretes a tree sap and the fish appear unaffected by it. (clown loach, corydoras,plecos)
To germinate this tree as I understand it grows along rivers, it needs to have water constantly flowing around it and through it. I used potting soil mixed with sand. I planted 6 seeds and two came up. This was my fourth attempt to germinate.