I would say for that tank i would put in there Magnum 350 and maybe a powerhead but the powerhead really isn't needed Ummmmm........on the Oscar thing you should feed him about 5-8 small pellets twice a day
Well, you could use a net to block off the oscar from getting the food at feeding time for the Arowana ;D
Well, you could use a net to block off the oscar from getting the food at feeding time for the Arowana ;D