May 7, 2012 - I have a 550 LITRE Juwel Vision Aquarium with large fishes such as oscars and an Arowana and a few tin foil barbs. My fishes go through allot of fish food a week. I currently use the high quality fish food pellet called Hikari Cichlid pellets (250grams) and it takes them less than a week to go through the bag. I consider myself a very experienced predatory tropical fish enthusiast who has 3 years ecxperience in aquatic retail. For this reason I know I am not feeding them too much, it is their...