where do I begin.... firstly, the process of cycling takes weeks, not days. the only way to know would be to purchase a water testing kit and perform ammonia, nitrite and nitrate tests. if ammonia and nitrite levels have risen and fell (a reading of 0 ppm), then you're pretty much done with the cycling process.
if you want to keep arowanas, you should have a temperature of 78 to 82 F... depending on your room temperature.