Yo, right now i have a 46gallon tank and I have catfish and a Ck. There going to get big, my red tail already grew and i've had him for a week! For large tanks, im thinking of going at least 500gallons, what kind of filtration system would I use? Would I also need a reservior for it? Im only familiar with smaller tanks. If im going to upgrade to that size of a tank, I want to get an early jump on learning and researching all the componets to it. Thanks everyone.
