mark7616
potatoes
That 8ft tank you have gone out and bought is a waste of money for the fish you plan on keeping in it. The dimesions are crap. For 1 there is no way on earth you can keep any arowana in there let alone a silver the tanks is only 8ftx19"x24" the width of that tank means you cant really keep any fish in there that get more that 13" say as fish do need to turn around. I think you really do need to do your homework on fish a bit more the stocking you have got for 1 is not right you can see in your pics that the oscars fight. YOu need to rehome you arowana or look at getting a tank of around 96x36x24 minimum but like I have said to you before if you want to keep other mid to top leval fish you need to go deeper or the arowana will go on a bullying spree. Also you dont have enough filtration 1 fx5 wont be enough you need to look at 2 for big messy fish.