360?! I am sorry but how did you come up with 360?piranha45 said:360g tank with a 30g sump and a wet/dry filtration system. Or 6-7 aquaclear 500s instead of the wet/dry system.

4' you are talking about wild Aro's, in captivity they barley reach little over 2'..piranha45 said:because its a 4-foot fish. "But it can bend!" doesn't mean it should have to bend every time it wants to turn around.
anyway tank recommendations are opinions, that one is mine. although i really dont feel a 360g is suitable long term either. should be kept in at least a 8'x8' pond. same with pacu.
Fair enough, I have never even kept an Aro and just going from what I heard.piranha45 said:cuz they're not kept properly
One arowana will need 125 gallons and each oscar will need atleast 75 gallons per oscar. But the more tank, the better. You need an abosolutely great filtration for this. How many oscars do you have? this is for full grown fish but they grow surprisingly fast. Good luck with your project. SusieTONSOFOSCAR said:What is a good tank set up for one silver arowana and some oscars????